Take advantage of the combination of HSS cutting geometry, a 180° countersink angle and a fixed pilot pin for reliable, burr-free seating of socket and hex screws; order the tool directly via Metav Werkzeuge or consult the Metav team for application advice. Flat countersink DIN 373 M8, fine grade for through-hole, HSS, 3-flute – TECWERK The Flat countersink DIN 373 M8, fine grade for through-hole, HSS, 3-flute – TECWERK is a precision countersinking tool for creating clean, flush recesses for socket-head cap screws, hex bolts and nuts in a range of common workshop materials HSS with 180° countersink angle Three cutting edges for smooth finish Cylindrical shank with fixed pilot pin Fine grade optimised for through-holes Burr-free seating for threaded fasteners The 180° geometry and fine-grade flute design deliver burr-free countersinks suitable for socket-head cap screws, hex bolts and nuts. This tool produces a clean bearing surface that supports correct torque transfer and reduces post-process rework. It is engineered for use in steel, cast iron and non-ferrous metals, where a precise, flat seating is required; the geometry prevents undercutting and ensures the fastener head sits uniformly, improving assembly quality and component longevity. Reliable cutting performance and optimised feeds Made from HSS and equipped with three cutting edges, the tool offers consistent material removal and a superior surface finish compared with two-flute alternatives. For workpieces up to the specified resistance, a recommended feed of 0.2 mm/rev in steel (up to 500 N) balances chip formation and surface integrity. The design achieves the best results at lower cutting speeds, which reduces heat input and preserves edge life while maintaining a controlled, chatter-free operation—important for repeatable production runs. Accurate guidance and reduced vibration for consistent results A cylindrical shank combined with a fixed pilot pin provides positive centring, particularly for through-hole countersinking. The pilot maintains alignment during entry, which helps to avoid slippage and chatter, producing a predictable seat every cycle. The fine quality grade designed for through-holes further improves repeatability in batch work, so the tool is suitable for both single-item workshops and serial production where consistent fastener seating is critical. Practical suitability for workshop and production environments The construction and recommended cutting parameters make this countersink a straightforward choice for maintenance, toolrooms and fabrication shops that demand reliable, burr-free countersinking without complex process setup. The tool reduces secondary deburring operations and supports faster assembly checks, contributing to shorter cycle times and less scrap. For complex materials or unfamiliar applications, technical advice is available to confirm suitability and recommended speeds. For guaranteed precision and dependable supply, request the TECWERK flat countersink via Metav Werkzeuge — contact Metav Werkzeuge in Emmerich at info@metav-werkzeuge.com or +49 2822 7131930 for technical guidance and timely delivery Technical Data Article number: 2000865335NW SKU / UID: 2000865335NW Manufacturer: TECWERK Packaging unit: 1 Core data Countersink angle: 180° Cutting edges: 3 Recommended feed in steel (≤ 500 N): 0.2 mm/rev Material: HSS Grade: fine for through-hole Special features Cylindrical shank Fixed pilot pin Designed for socket-head screws, hex bolts and nuts Ideal for burr- and chatter-free countersinking in steel and cast iron, non-ferrous and light metals Best results at low cutting speed FAQ What materials is this countersink suitable for? The TECWERK flat countersink is suitable for steel, cast iron and non-ferrous or light metals, offering burr-free results across these material groups. How many cutting edges does the tool have and why does it matter? The tool features three cutting edges, which improve finish quality and balance cutting forces for smoother, chatter-reduced operation compared with two-flute designs. What is the countersink angle and which fasteners does it accommodate? The countersink has a 180° angle and is intended for producing recesses for socket-head cap screws, hex bolts and nuts. Is a pilot pin included and what is its function? A fixed pilot pin is integrated to ensure accurate centring and to reduce slippage during entry, helping to achieve consistent seating in through-holes. Is there a recommended cutting speed or feed? Best results are achieved at lower cutting speeds with the recommended feed in steel up to 500 N of 0.2 mm/rev to maintain surface quality and tool life. Manufacturer/Responsible: NORDWEST Handel AG, Robert-Schuman-Straße 17, 44263 Dortmund

Benefit from the combination of HSS construction, a 180° countersink angle and three cutting edges for burr‑free, chatter‑resistant seating of fasteners; order through Metav Werkzeuge or request advice from our consultants. Flat countersink DIN 373 M6 — HSS flat countersink, 180° | TECWERK A Flat countersink DIN 373 M6 engineered for precise, burr‑free countersinking of cylinder head screws, hex bolts and nuts in steel, cast iron and non‑ferrous metals. HSS construction, three cutting edges 180° countersink angle for precise seating Cylindrical shank with fixed pilot pin Accurate seats for secure screw fastening The HSS material and the tool’s three cutting edges produce a consistent, clean seat that reduces the need for secondary deburring. The 180° countersink angle is matched to common fastener geometries, ensuring that cylinder head screws, hex bolts and nuts sit square and load is distributed evenly. For production environments this means fewer rework cycles and a more predictable assembly process. Stable machining and process compatibility Equipped with a cylindrical shank and a fixed pilot pin, the cutter centres reliably in through holes and maintains concentricity during operation. The tool is suitable for steel, cast iron and non‑ferrous and light metals, delivering burr‑free and chatter‑free countersinking when used at lower cutting speeds. The specified feed in steel up to 500 N of 0.2 mm/rev provides a practical reference for integration into turning, drilling or CNC countersinking routines. Practical durability and handling guidance A medium quality grade for through holes balances tool life and economy for general workshop and industrial use. Best results are achieved with conservative spindle speeds and steady feed to avoid overheating and premature wear; this approach preserves edge geometry and maintains the burr‑free finish that characterises the tool. The combination of HSS material and three cutting edges supports reproducible results across batches and materials, making the cutter a reliable choice for mixed‑material operations. Discuss TECWERK countersink options with Metav Werkzeuge — reference SKU 2000865341NW when requesting a technical consultation or placing an order Technical data Article number: 2000865341NW Material: HSS Standard: DIN 373 Manufacturer: TECWERK Packaging unit: 1 Data Countersink angle: 180° Cutting edges: 3 Feed in steel ≤500 N: 0.2 mm/rev Grade: medium for through holes Special features Cylindrical shank with fixed pilot pin For countersinking cylinder head screws, hex bolts and nuts Suitable for steel, cast iron, non‑ferrous and light metals Best results at low cutting speed Burr‑free and chatter‑free countersinking FAQ What materials can this countersink be used on? The TECWERK Flat countersink DIN 373 M6 is suitable for steel, cast iron and non‑ferrous and light metals, delivering burr‑free results when used at appropriate speeds. What is the recommended feed for steel applications? For steel up to 500 N the recommended feed for the TECWERK countersink is 0.2 mm/rev, which supports stable cutting and a clean finish. Which fasteners is the tool designed for? The cutter is intended for producing seats for cylinder head screws, hex bolts and nuts; the 180° angle ensures correct seating and load distribution. How many cutting edges does the tool have and why does that matter? The tool has three cutting edges, which contribute to smoother cutting action, reduced vibration and a better surface finish compared with two‑edged designs. What performance grade is the countersink and for which hole type is it optimised? This is a medium quality grade tool optimised for through holes, providing a balance between cost and durability for general workshop use. Manufacturer / Responsible: NORDWEST Handel AG, Robert‑Schuman‑Straße 17, 44263 Dortmund

Take advantage of the HSS construction and 180° seating angle for consistently burr-free countersinks, plus the three cutting edges that ensure a smooth finish at low cutting speeds; order the countersink directly via Metav Werkzeuge or consult the Metav specialists for tailored application advice. DIN 373 M4 Countersink (HSS) – 3-flute, 180° by TECWERK DIN 373 M4 Countersink (HSS) is a precision countersink designed for creating clean seatings for cylinder head screws, hex screws and nuts across steel, cast iron and non-ferrous metals. HSS construction for durable cutting performance 180° countersink angle for flat seating Three cutting edges for burr-free finish Cylinder shank with fixed pilot pin for guided runs Consistent, burr-free seatings for fasteners The combination of high-speed steel (HSS) material and a 180° countersink angle delivers reliable flat seatings for a wide range of fasteners. The three cutting edges reduce vibration and produce a cleaner surface than two-flute designs, which translates into fewer deburring operations and improved assembly quality. This results in a measurable reduction in rework time when working on plain steel or cast components; the tool is especially effective at lower cutting speeds where heat generation is minimised and tool life is extended. The result is a professional seating with minimal burr formation and a superior contact surface for screws and nuts. Robust geometry and guided accuracy for repeatable results Equipped with a cylinder shank and a fixed pilot pin, the countersink ensures guided entry and stable rotation even in through-holes. The three-flute geometry balances cutting forces and improves chip evacuation, which is beneficial when machining non-ferrous and light alloys as well as common steels. The medium quality grade specified for through holes offers a solid compromise between cost and longevity, making the tool suitable for production runs and workshop tasks where dependable repeatability is required. The guided design also helps prevent rattling and chatter marks that can compromise the seating integrity. Optimised cutting data and broad material compatibility Technical specifications support practical use: the tool achieves best results at lower cutting speeds, and the recommended feed in steel up to 500 N is 0.16 mm/rev, a setting that balances finish and tool wear. The design is intended for use on steel, cast iron, non-ferrous metals and light alloys, yielding clean chamfers and minimal distortion. When machining mixed batches or sensitive components, the controlled geometry and HSS composition reduce the risk of workpiece damage. For users less familiar with countersinking parameters, the clearly defined feed and suitability notes simplify setup and shorten preparation times. For burr-free, guided countersinking with TECWERK quality, contact Metav Werkzeuge for application guidance and reliable supply from Emmerich—call +49 2822 7131930 or email info@metav-werkzeuge.com Technical Data Article number: 2000865339NW Product name: DIN 373 M4 Countersink (HSS) Manufacturer: TECWERK Packaging unit: 1 Facts Material: HSS Countersink angle: 180° Number of cutting edges: 3 Recommended feed in steel (≤500 N): 0.16 mm/rev Special features DIN 373 standard Cylinder shank with fixed pilot pin For countersinking cylinder head screws, hex screws and nuts Ideal for burr- and chatter-free countersinking in steel and cast iron Suitable for non-ferrous and light metals Best results at low cutting speed Quality grade: medium (for through holes) FAQ What materials can be machined with this countersink? The DIN 373 M4 countersink (HSS) is suitable for steel, cast iron, non-ferrous metals and light alloys, offering burr-free results across these materials when used at recommended speeds and feeds. How does the three-flute design affect finish quality? The three cutting edges on the TECWERK countersink reduce vibration and improve chip evacuation, which produces a smoother, burr-free finish compared with two-flute variants. What is the recommended feed for steel machining? For steel up to the specified load of 500 N, the suggested feed is 0.16 mm/rev, balancing surface finish and tool life as indicated in the technical guidance. Can this countersink be used for through-holes only? This tool is specified with a medium quality grade for through holes, making it particularly well suited to through-hole countersinking applications, while still performing reliably in general workshop tasks. What features help with guided insertion and stable operation? The cylinder shank combined with a fixed pilot pin ensures guided entry and stable rotation, reducing the risk of chatter and improving repeatability for assembly-critical seatings. Manufacturer / Responsible: NORDWEST Handel AG, Robert-Schuman-Straße 17, 44263 Dortmund

Take advantage of the combination of HSS construction, a three‑cutting‑edge geometry and a 180° countersink angle to produce clean, burr‑free countersinks for M5 fastenings; order the tool directly via Metav Werkzeuge or contact the consultants for technical advice. TECWERK Flachsenker DIN 373 M5 — HSS countersink, 3‑flute, 180° The Flachsenker DIN 373 M5 is a high‑speed steel countersink designed for precise, burr‑reduced countersinking of M5 cylinder head screws, hex screws and nuts across steels and non‑ferrous alloys. HSS construction for long tool life Three cutting edges for smooth finish 180° countersink angle for M5 screws Cylinder shank with fixed pilot for guidance Consistent, measurable performance for production use The countersink delivers a clearly defined 180° geometry and a three‑flute cutting design that together promote stable cutting action and uniform chamfers. The use of HSS material gives a balanced hardness and toughness profile suited to general workshop and light industrial production. Specified feed in steel of 0.16 mm per revolution provides a concrete machining parameter that supports process planning and repeatable results, while the tool’s fine grade for through holes reduces chatter and eliminates common quality issues such as tool marks and uneven seating. Material compatibility and application benefits Engineered for universal workplace utility, the tool is optimised for burr‑free countersinking in steel, cast iron, and a range of non‑ferrous and light metals. The integrated fixed pilot on the cylinder shank maintains concentricity when creating countersinks for M5 fastenings, reducing rework and assembly issues. Operating at low cutting speeds yields the best surface finish and tool life; this guidance helps planners choose cutting parameters that balance throughput with component quality. Practical advantages for workshop integration The compact design with a cylinder shank ensures easy mounting in standard tool holders and hand‑held machines, while the three cutting edges reduce vibration compared with two‑flute variants. The DIN 373 specification simplifies ordering and tool inventory management by standardising angle and fitment for M5 applications. For maintenance and quality assurance, the robust HSS blank tolerates light sharpening and manual refurbishment, extending service life and lowering total tooling cost in long runs. For burr‑free countersinking with TECWERK precision, contact Metav Werkzeuge for procurement and technical guidance at info@metav-werkzeuge.com or call +49 2822 7131930 — assistance from the Emmerich quality centre is available for specification matching and order support. Technical data SKU: 2000865333NW Product label: Flachsenker DIN 373 M5 Güte fein f.DL HSS Z.3 TECWERK Manufacturer brand: TECWERK Packaging unit: 1 Internal ID: 2000865333NW Facts Countersink angle: 180° Cutting edges: 3 Feed in steel (up to 500 N): 0.16 mm/rev Standard: DIN 373 Special features Material: HSS Shank type: cylinder shank with fixed pilot Application: countersinking for cylinder head screws, hex screws and nuts Suitable for: steel, cast iron, non‑ferrous and light metals Grade: fine for through holes Best results at: low cutting speed FAQ What is the recommended application for this countersink? The TECWERK Flachsenker DIN 373 M5 is intended for producing clean countersinks for M5 cylinder head screws, hex screws and nuts, especially where burr‑free seating is required. Which materials can be machined with this tool? The countersink is suitable for steel, cast iron, and a variety of non‑ferrous and light metals; best surface finish is achieved at lower cutting speeds. How many flutes does the tool have and why does that matter? The tool features three cutting edges, which improve cutting stability and produce a smoother finish compared with two‑flute designs. Is the tool compatible with standard tool holders? Yes. The cylinder shank with fixed pilot allows straightforward mounting in conventional holders and supports accurate guidance during countersinking. What feed rate should be used in steel? A feed of 0.16 mm per revolution in steel (up to 500 N) is specified for consistent results and to reduce chatter. Manufacturer/Responsible: NORDWEST Handel AG, Robert‑Schuman‑Straße 17, 44263 Dortmund

Reliable burr‑free countersinking for steel, cast iron and non‑ferrous metals is achieved thanks to the combination of HSS construction and a 180° geometry that promotes flush seating. Fast, repeatable results are delivered by the cylindrical shank and fixed pilot pin — order directly via Metav Werkzeuge or contact our consultants for application guidance. TECWERK Flat Countersink DIN 373 M12 — HSS, 3‑flute, 180° The TECWERK Flat Countersink DIN 373 M12 is a DIN‑standard countersink with cylindrical shank and fixed pilot pin, designed for precise, burr‑free countersinking of cylinder head screws, hex bolts and nuts. DIN 373 standard design HSS construction for edge retention 180° angle for flush seating Cylindrical shank with fixed pilot pin Precise, flush seating for threaded assemblies The combination of 180° countersink geometry and high‑speed steel guarantees a flat, consistent seating surface for fasteners. Where correct clamping and torque are critical, this geometry reduces tilting and improves contact area, so assembly integrity is maintained. The tool’s specification follows DIN 373 and is intended to produce burr‑free chamfers even where close‑tolerance screw heads must sit flush. Smooth cutting and controlled feed for reduced chatter Equipped with three cutting edges, the countersink delivers balanced chip formation and reduced vibration during operation. For steel (up to the indicated 500 N condition) a recommended feed is 0.2 mm/rev, and best results are obtained at lower cutting speeds; this combination reduces chatter and minimises burr formation. The result is a cleaner secondary operation and less rework in production. Repeatable alignment and straightforward mounting A cylindrical shank with a fixed pilot pin ensures accurate guidance into the core hole, so each hole is centred reliably before countersinking. The tool is graded for use with a core hole and is suitable for preparing seats for cylinder head screws, hex head screws and nuts, which streamlines process planning and reduces cycle variability on repeat operations. Durable performance across common workshop materials Manufactured from HSS, the countersink is suitable for steel, cast iron, and a wide range of non‑ferrous and light metals. Its geometry and flute design are optimised for burr‑ and rattle‑free countersinking, so less finishing is required. In short runs and production batches alike, the tool offers dependable edge life and predictable results, supporting efficient throughput on the shop floor. For burr‑free, DIN‑compliant countersinking choose the TECWERK Flat Countersink via Metav Werkzeuge — contact our Emmerich team at info@metav-werkzeuge.com or +49 2822 7131930 for tailored advice and supply coordination Technical Data SKU: 2000865351NW Label: Flachsenker DIN 373 M12 f.Kernloch HSS Z.3 TECWERK Manufacturer: TECWERK Packaging unit: 1 Facts Cutting edges: 3 Countersink angle: 180° Feed in steel up to 500 N: 0.2 mm/rev DIN designation: DIN 373 Special features Material: HSS Cylindrical shank Fixed pilot pin For cylinder head screws, hex head screws and nuts Ideal for burr‑ and chatter‑free countersinking Suitable for steel, cast iron, non‑ferrous and light metals Best results at low cutting speeds Grade: for core hole FAQ Which materials can be processed with this countersink? The TECWERK flat countersink is suitable for steel, cast iron and non‑ferrous/light metals, delivering burr‑reduced results across these materials. How many flutes does the tool have and why does that matter? The tool has three cutting edges, which promote balanced chip evacuation and reduced vibration compared with two‑flute designs. What is the recommended feed and cutting speed? A feed of 0.2 mm/rev is indicated for steel within the specified condition (up to 500 N); lower cutting speeds are recommended for best surface finish and tool life. Which fasteners is this countersink intended for? It is designed to produce seats for cylinder head screws, hex head screws and nuts, conforming to DIN 373 geometry for flush seating. How does the shank and pilot pin affect repeatability? The cylindrical shank combined with the fixed pilot pin centres the tool in the core hole, ensuring repeatable alignment and consistent countersink depth Manufacturer/Responsible: NORDWEST Handel AG, Robert‑Schuman‑Straße 17, 44263 Dortmund

Benefit from precise, burr‑free countersinking achieved by the combination of HSS construction and a 3‑flute geometry with a fixed pilot; the fine grade tolerance and 180° angle ensure consistent seating for cylinder‑head and hex screws. Order the TECWERK flat countersink directly via Metav Werkzeuge or consult our specialists for application advice. Flat countersink DIN 373 M6 – TECWERK (fine grade, HSS, 3 flutes, 180°) A Flat countersink DIN 373 M6 engineered for burr‑free creation of countersinks for cylinder‑head screws, hex screws and nuts across steel, cast and non‑ferrous materials. HSS with 3 cutting edges 180° countersinking angle Cylindrical shank with fixed pilot Fine grade for through‑holes Reliable seating and assembly quality The 180° countersink geometry delivers a precise contact surface that improves fastening reliability. With a 3‑flute design in HSS, the tool produces a consistent chamfer and reduces radial forces, which translates to fewer distorted screw heads and more uniform torque behaviour during assembly. This results in fewer reworks and more predictable joint performance, particularly important in serial production and maintenance workflows. Clean finishes and vibration control The combination of a fixed pilot and balanced flute geometry minimises chatter and burr formation during countersinking. Such stability yields noticeably burr‑free edges on both through‑holes and mating surfaces, reducing the need for secondary deburring operations. For workshops focused on finish quality, this tool reduces manual rework time and improves the first‑pass yield for assemblies. Optimised cutting parameters for durable results Rated to perform best at low cutting speed, the tool achieves superior surface quality in tougher materials. The specification includes a feed recommendation of 0.2 mm/rev in steel up to 500 N, which provides a practical starting point for process setup and ensures consistent material removal without overheating. Compliance with DIN 373 gives a clear reference for tolerances and interchangeability in professional environments. Versatile material applications and workshop fit Designed for use in steel, cast iron and non‑ferrous and light metals, the countersink covers a broad range of common workshop tasks. The cylindrical shank makes the tool compatible with standard tooling holders and drill chucks, while the fine grade is optimised for through‑hole applications where tight countersink tolerances are required. Integration into existing workflows is straightforward, supporting both manual and machine production settings. For reliable, repeatable countersinking choose the TECWERK fine‑grade flat countersink via Metav Werkzeuge — contact our Emmerich team for specification guidance or application recommendations. Technical data Article number: 2000865334NW Label: Flachsenker DIN 373 M6 Güte fein f.DL HSS Z.3 TECWERK Manufacturer: TECWERK Packaging unit: 1 Facts Countersink angle: 180° Cutting edges: 3 Feed in steel ≤ 500 N: 0.2 mm/rev Standard: DIN 373 Special features Material: HSS Shank: cylindrical shank with fixed pilot Grade: fine for through‑holes Application: steel, cast iron, non‑ferrous and light metals Recommendation: best results at low cutting speed FAQ What screw types is this countersink suitable for? The countersink is suitable for creating recesses for cylinder‑head screws, hex screws and nuts as described for the TECWERK flat countersink (DIN 373 M6). Can the tool be used on stainless or hardened steel? The design is optimised for steel and cast iron plus non‑ferrous metals; for stainless or hardened steels, process parameters should be adapted and tool life monitored. How should feed and speed be set for reliable results? A feed of 0.2 mm/rev in steel up to 500 N and a low cutting speed are recommended to achieve the best surface finish and long tool life with this countersink. Is the shank compatible with standard drill chucks? Yes, the cylindrical shank fits standard chucks and holders, making the tool straightforward to integrate into typical workshop equipment. What quality standard does the tool conform to? The countersink is produced to DIN 373 specifications, ensuring standardised geometry and interchangeability for professional applications. Manufacturer/Responsible: NORDWEST Handel AG, Robert‑Schuman‑Straße 17, 44263 Dortmund

Efficient, burr-free countersinking is delivered by the combination of HSS construction, a 180° seating angle and a 3‑flute geometry, yielding consistent results for through-holes in steel and cast iron; order the tool via Metav Werkzeuge or request advice from our consultants for machining parameters. Countersink DIN 373 M3, HSS — 180° 3‑flute (TECWERK) A DIN 373 M3 countersink designed for burr-free seating of cylinder head screws, hex screws and nuts across steel, cast iron and light non‑ferrous alloys HSS construction for tool longevity 180° angle for flat seating Three cutting edges for smooth finish Cylinder shank with fixed pilot High-efficiency countersinking for production use The tool combines a high-speed steel (HSS) body with a standardised DIN 373 form to deliver reproducible seating geometry. The 3‑flute design reduces vibration and spreads cutting forces, which improves surface finish and lowers the risk of chatter; this directly increases throughput and reduces rework in batch production. The geometry is optimised for burr-free results, so less manual deburring is required and assembly time is reduced. For components machined in mixed batches, the consistent seating produced by this tool supports repeatable torque behaviour in assembled fastenings. Material compatibility and recommended cutting parameters Engineered for reliable performance in a range of substrates, the countersink shows best results in steel and cast iron, while also performing well in light non‑ferrous metals. The tool is specified with a feed of 0.14 mm per rev in steel up to 500 N, and achieves optimal life at lower cutting speeds — a consideration when selecting spindle speed for larger diameters or harder materials. The medium tolerance class for through‑holes ensures adequate clearance where required, while the fixed pilot provides positive location for accurate seat placement even in pre‑drilled holes. Practical design features that save time at the machine The combination of a cylinder shank with fixed pilot and the 180° countersink angle simplifies setup and reduces cycle variability: the pilot centres reliably in through‑holes, and the flat seat created by the angle is suitable for cylinder head and hexagonal screw heads. The three cutting edges distribute wear evenly, extending service life and maintaining finish quality over longer runs. For workshop environments seeking dependable everyday tools, this geometry balances robustness with straightforward handling and predictable results. For precision, longevity and consistent seating choose the TECWERK DIN 373 M3 countersink — contact Metav Werkzeuge in Emmerich for tailored machining advice and to arrange supply via info@metav-werkzeuge.com or call +49 2822 7131930 Technical data Article number: 2000865338NW Label: Flachsenker DIN 373 M3 Güte mittel f.DL HSS Z.3 TECWERK Manufacturer: TECWERK Packaging unit: 1 Facts Standard: DIN 373 Countersink angle: 180° Number of cutting edges: 3 Feed in steel up to 500 N: 0.14 mm per rev Size designation: M3 Grade: medium for through‑hole Special features Material: high-speed steel (HSS) Shank type: cylinder shank with fixed pilot Application: countersinking for cylinder head screws, hex screws and nuts Suitable materials: steel, cast iron, non‑ferrous and light metals Best performance at lower cutting speeds for extended tool life FAQ Which materials is the countersink suited to? The TECWERK DIN 373 M3 countersink is suitable for steel, cast iron and light non‑ferrous metals; this versatility supports mixed‑material production runs (SKU 2000865338NW). What seating angle and finish does the tool produce? The tool produces a 180° flat seat suitable for cylinder head screws, hex screws and nuts, and the 3‑flute geometry promotes a smooth, burr‑reduced finish. What feed and speed recommendations apply? For steel up to 500 N, follow the specified feed of 0.14 mm per rev and favour lower cutting speeds to maximise tool life and surface quality. Is the countersink suitable for through‑holes? Yes; the tool is specified at a medium grade for through‑holes and includes a fixed pilot for positive location and repeatable seating. Manufacturer / Responsible: NORDWEST Handel AG, Robert‑Schuman‑Straße 17, 44263 Dortmund

Take advantage of the combination of High-speed steel construction and a 180° countersink angle for precise, burr-free seating; the three cutting edges and fixed pilot pin ensure guided, chatter-reduced operation in a wide range of metals. Order the countersink directly via Metav Werkzeuge or consult our advisors for application-specific guidance. Countersink DIN 373 M12 — HSS, 3‑flute, 180° (TECWERK) The Countersink DIN 373 M12 is a high-quality countersink designed for producing clean 180° recesses for socket-head and hexagon screws and for nut seating in steel, cast iron and non‑ferrous metals. HSS construction for extended tool life 180° countersink angle for precise seating Three cutting edges for burr-free finish Cylinder shank with fixed pilot pin for reliable guidance Precise seating for reliable fastener fit The tool delivers consistently accurate 180° recesses by combining a defined 180° geometry with a three cutting edges design. This geometry ensures the correct contact surface for socket-head and hexagon screws, reducing tilt and stress on the fastener head during assembly. The result is a reliable joint with reduced rework; the cutting geometry is matched to the DIN 373 standard so that countersinks conform to established technical expectations. This creates immediate advantages in assembly accuracy and component longevity. Material compatibility and process guidance Made of High‑speed steel (HSS) and specified for a broad material range, the countersink is effective on steel and cast iron as well as aluminium and other light metals. The tool is optimised for burr‑free finishing, which reduces secondary deburring operations and shortens cycle times. For tougher steels, follow the recommended low cutting speeds to avoid workhardening; the stated feed recommendation of 0.2 mm/rev in steel up to 500 N provides a reliable starting point for process set‑up and helps to maintain surface quality. Productivity through guided cutting and stability A cylinder shank combined with a fixed pilot pin provides positive guidance and reduces run‑out and chatter, particularly in through‑hole applications. The three‑cut geometry spreads cutting forces evenly, lowering vibration and improving surface finish compared with two‑edge designs. For production environments seeking reproducible results, this configuration supports steady cycle times and a lower scrap rate, translating to measurable gains in operational efficiency. Designed for through‑hole accuracy and ease of use Specified as a fine grade for through holes, the countersink achieves clean recesses without expanding the hole diameter unnecessarily. The pilot pin secures concentric alignment and protects the bore while cutting, which simplifies setup on manual and CNC machines alike. Because the tool performs best at modest cutting speeds, it is particularly suitable for workshops and production lines where consistent quality takes precedence over maximum material removal rates. For precision countersinking, specify the TECWERK countersink and contact Metav Werkzeuge in Emmerich for application advice and supply via info@metav-werkzeuge.com or +49 2822 7131930 Technical data Article number: 2000865337NW Designation: Countersink DIN 373 M12, fine grade, HSS, 3‑cut Brand: TECWERK Packaging unit: 1 UID: 2000865337NW Facts Size: M12 Countersink angle: 180° Cutting edges: 3 Feed in steel (up to 500 N): 0.2 mm/rev Standard: DIN 373 Special features High‑speed steel (HSS) material Cylinder shank with fixed pilot pin For socket‑head and hexagon screws and for nuts Burr‑ and chatter‑reduced countersinking in steel, cast iron and non‑ferrous metals Best results at low cutting speed Fine grade for through‑hole applications FAQ What materials is this countersink suitable for? The TECWERK countersink is suitable for steel, cast iron and a range of non‑ferrous and light metals and is designed to produce burr‑free recesses across these materials. What is the recommended feed for use in steel? A feed of around 0.2 mm/rev in steel up to 500 N is recommended for the best surface quality and tool life when using this countersink. How does the fixed pilot pin help in production use? The fixed pilot pin ensures concentric guidance through the hole, reducing run‑out and the risk of enlarging the bore during countersinking, which improves repeatability in series production. Is the geometry compliant with recognised standards? Yes, the tool is manufactured to DIN 373 specifications and provides the defined 180° geometry required for standard fastener seating. Which features reduce the need for secondary deburring? The combination of three cutting edges, fine grade geometry and HSS cutting material is engineered for burr‑free finishes, often eliminating the need for additional deburring. Manufacturer / Responsible: NORDWEST Handel AG, Robert‑Schuman‑Straße 17, 44263 Dortmund

Benefit from a robust HSS construction, a 180° countersink angle and three cutting edges that deliver burr- and chatter-free seating for fasteners; order the tool directly via Metav Werkzeuge or ask our consultants for application advice. Countersink DIN 373 M4 (for core hole) – HSS, 180° angle, 3 cutting edges (TECWERK) A Countersink DIN 373 M4 (TECWERK) designed to produce clean countersinks for cylinder head screws, hexagon screws and nuts across steel, cast iron and non‑ferrous materials. HSS construction for long service life 180° countersink angle for precise seating Three cutting edges for burr-free finish Cylindrical shank with fixed pilot pin Precise, burr-free seating for threaded fasteners The three‑edge cutting geometry and 180° countersink angle enable a consistently flat seating for cylinder head screws, hexagon screws and nuts. This results in a burr‑free and secure joint, reducing the need for secondary deburring and minimising assembly rejects. The tool’s conformity with DIN 373 ensures compatibility with standard screw profiles and supports efficient, repeatable results in production or workshop environments. Durable HSS construction and guided pilot ensure stability Made from HSS, the tool combines toughness with wear resistance for extended service life under normal workshop conditions. The cylindrical shank and fixed pilot pin provide reliable guidance in a prepared core hole, reducing radial run‑out and preventing chatter during countersinking. With three cutting edges, chip load is distributed evenly, which supports a smooth finish and reduces tool vibration even when working with mixed batches of steel, cast iron and light metals. Optimised cutting data for reproducible production results The geometry is optimised for low cutting speeds, which typically yields the best surface quality and tool life for countersinking operations. Measurable process parameters include a recommended feed in steel (≤500 N) of 0.16 mm/rev, supporting predictable material removal and consistent countersink profiles. The tool is specified for use with a core hole grade, making it suitable where a pilot bore is provided before countersinking; this contributes to process stability and repeatability in industrial applications. Contact Metav Werkzeuge for tailored application advice on the TECWERK countersink or to discuss suitable operating parameters and availability in Emmerich: info@metav-werkzeuge.com / +49 2822 7131930 Technical Data Article number: 2000865346NW Product designation: Flachsenker DIN 373 M4 for core hole, HSS, TECWERK Manufacturer: TECWERK Packaging unit: 1 Facts Cutting edges: 3 Countersink angle: 180° Feed in steel (≤500 N): 0.16 mm/rev Special features Material: HSS Standard: DIN 373 Shank type: cylindrical shank Guidance: fixed pilot pin Applications: countersinking for cylinder head screws, hexagon screws and nuts Suitable materials: steel, cast iron, non‑ferrous and light metals Optimised for low cutting speed Grade: for core hole FAQ What materials can be machined with this countersink? The TECWERK countersink is suitable for steel, cast iron, non‑ferrous and light metals, delivering burr‑reduced results across these materials. Is the tool compatible with standard screw types? Yes, the geometry complies with DIN 373 and is intended for countersinking cylinder head screws, hexagon screws and nuts. What guidance does the tool use to prevent run‑out? A fixed pilot pin combined with the cylindrical shank ensures stable guidance in a prepared core hole and reduces radial run‑out. What cutting data is recommended for reproducible results? For steel up to the specified force level, a feed of 0.16 mm/rev is indicated; best outcomes are achieved at low cutting speeds to extend tool life and improve surface finish. How many cutting edges does the tool have and what is the benefit? The tool features three cutting edges, which distribute chip load evenly and promote a smoother, chatter‑free finish. Manufacturer/Responsible: NORDWEST Handel AG, Robert‑Schuman‑Straße 17, 44263 Dortmund

Taking advantage of HSS robustness and the precise three-cut, spiral-fluted geometry ensures dependable countersinking across standard machine screws M3–M10; combined with the fixed pilot pin and cylindrical shank, this results in reduced rework and smoother production runs. Order the set directly via Metav Werkzeuge or consult the specialists for application advice. TECWERK Countersink Set DIN 373 — HSS, M3–M10, three-cut TECWERK Countersink Set DIN 373 is a precision-engineered HSS countersink range for clean chamfering and deburring of machine screws from M3 to M10, designed for reliable centring and repeatable results in workshop and industrial environments. HSS construction for enduring cutting performance Spiral-fluted, three-cut geometry for clean chips Fixed pilot pin and cylindrical shank for centring Packed in a durable plastic case for organised storage Consistent performance for varied screw sizes The set is manufactured from HSS, a high-speed steel alloy that combines hardness and toughness for extended tool life under standard countersinking loads. Conforming to DIN 373 indicates a standardised countersink geometry that matches common screw head profiles, which simplifies tool selection across multiple operations. The wide M3–M10 range supports typical fastening sizes, reducing the need for frequent tool changes and improving throughput on repetitive tasks. Improved surface finish and chip control reduce rework A three-cut flank geometry, combined with the spiral-fluted profile, produces smaller, consistent chips and promotes effective chip evacuation. This geometry leads to a finer chamfer and decreases the likelihood of burring, so fewer touch-ups are required after machining. The fixed pilot pin ensures accurate centring in pre-drilled holes, translating into uniform countersinks and predictable assembly fits — a direct gain in process reliability. Compatibility and practical workshop organisation The cylindrical shank is compatible with standard collets and drill chucks, allowing straightforward integration into existing machines and cordless drills where appropriate. Supplied in a secure plastic cassette, the components remain organised and protected, which shortens setup times and preserves cutting edges between jobs. The construction and packaging make the set suitable for routine maintenance work, small-batch production and general workshop use where consistent countersinking is required. For precision countersinking with proven HSS durability, request the TECWERK DIN 373 countersink set from Metav Werkzeuge or contact our technical advisors at info@metav-werkzeuge.com / +49 2822 7131930 for tailored recommendations and ordering assistance Technical Data Article number: 2000865330NW Item: Flachsenkersatz DIN 373 M3-M10 fein f.DL HSS Z.3 Ku.-Kass.TECWERK Manufacturer: TECWERK Packaging unit: 1 Facts Thread range: M3–M10 Cutting edges: 3 Content: 6 pieces Shank type: cylindrical Special features HSS material Spiral-fluted geometry Fixed pilot pin for centring Compliant with DIN 373 Packaging: plastic cassette FAQ What materials is this countersink set suitable for? The TECWERK countersink set is manufactured in HSS and is suitable for standard ferrous and non-ferrous workshop materials typically encountered when countersinking machine screws in general engineering. Can the countersinks be used in handheld drills? Yes, the cylindrical shank and fixed pilot pin allow use in standard drill chucks; the components are designed for both machine and workshop handheld applications where appropriate safety and speeds are observed. What advantage does the three-cut spiral geometry provide? The three-cut, spiral-fluted design on the TECWERK DIN 373 countersinks produces controlled chip formation and consistent surface finish, reducing the need for secondary deburring operations. How does the fixed pilot pin affect accuracy? The fixed pilot pin centres the tool in pre-drilled holes, ensuring repeatable alignment and uniform countersink depth across batches when using the TECWERK countersink set. Is the set organised for easy storage and transport? Yes, the set is supplied in a plastic cassette that keeps the tools protected and organised, facilitating quick tool changes and preserving cutting edges. Manufacturer/Responsible: NORDWEST Handel AG, Robert-Schuman-Straße 17, 44263 Dortmund

Take advantage of durable HSS construction, the 3‑cutting‑edge spiral geometry and the built‑in pilot pin for reliable centring; order directly via Metav Werkzeuge or request application advice from our consultants. Ruko countersink set DIN 373 M3–M10 – HSS, spiral‑fluted with fixed pilot pin The Ruko countersink set DIN 373 M3–M10 is a purpose‑made selection for precise preparation of threaded holes, covering the common metric thread sizes from M3 to M10. HSS construction for durable cutting Spiral‑fluted, 3‑cutting‑edge geometry Fixed pilot pin for accurate centring Supplied in a compact plastic cassette Faster, cleaner thread preparation The set is manufactured from HSS, meeting the DIN 373 specification and optimised for steady material removal and long tool life. The 3‑flute design reduces vibration and produces a uniform chamfer, which improves seating for fasteners and reduces rework. Where throughput matters, the combination of spiral fluting and three cutting edges enables consistent chip evacuation and a cleaner finish, translating into fewer rejects and less manual deburring on the production line. Reliable centring and compatibility with standard chucks A fixed pilot pin ensures secure centring when preparing tapped holes, minimising axial run‑out and the risk of off‑centre countersinks. The tools are fitted with a cylindrical shank, compatible with conventional drill chucks and holders, which simplifies integration into existing workstations and drilling rigs. Covering the M3–M10 thread range, this set provides a practical spread of sizes for general workshop and maintenance tasks without the need for frequent tool changes. Organised storage and workshop readiness Each cutter is supplied in a durable plastic cassette, keeping cutters secure and organised at the bench or in the tool cupboard. The compact storage reduces search time and protects cutting edges during transport, supporting smooth workshop routines and faster job turnover. The set includes one countersink for each specified thread size, offering a ready‑to‑use assortment that reduces procurement complexity and keeps downtime to a minimum. Contact Metav Werkzeuge for tailored application advice on the Ruko countersink set and to arrange supply from Emmerich; email info@metav-werkzeuge.com or call +49 2822 7131930 Technical data Article number: 4000601844NW Item name: Countersink set DIN 373 M3–M10 Manufacturer: Ruko GmbH Packaging unit: 1 Core data Cutting edges: 3 Thread range: M3–M10 Content: 6 pieces Standard: DIN 373 Special features Material: HSS Spiral‑fluted Fixed pilot pin Cylindrical shank Supplied in plastic cassette FAQ Which thread sizes does the set cover? The Ruko countersink set covers thread sizes from M3 to M10 and includes one countersink for each size in the specified range (SKU 4000601844NW). What is the advantage of the 3‑flute geometry? The 3‑flute, spiral‑fluted geometry in this Ruko countersink set reduces vibration, improves chip evacuation and produces a cleaner chamfer for reliable screw seating. Is the pilot pin suitable for centring on drilled holes? Yes, the fixed pilot pin provides stable centring for accurate chamfering and helps to prevent walk during preparation of threaded holes with the Ruko countersink set. What type of shank do the cutters have? The cutters are fitted with a cylindrical shank, allowing use in standard drill chucks and common tool holders suitable for workshop and maintenance tasks. How are the tools supplied and stored? The Ruko set is supplied in a compact plastic cassette that protects the cutting edges and keeps the assortment organised for rapid workshop access. Manufacturer/Responsible: Ruko GmbH Präzisionswerkzeuge, Robert‑Bosch‑Strasse 7, 71088 Holzgerlingen

Take advantage of precise thread preparation, robust HSS cutting geometry and organised storage for faster, more reliable countersinking in metric workshop applications — order via Metav Werkzeuge or contact the consultants for tailored advice. TECWERK HSS Flat Countersink Set DIN 373 (M3–M10) — 6-piece, spiral-fluted, 3-cut A TECWERK flat countersink set designed for clean countersinking of metric screws and prepared core holes in mechanical and industrial workshop environments HSS, spiral-fluted countersinks Three cutting edges for smooth finish Fixed pilot pin for accurate centring Cylindrical shank; for M3–M10 threads Accurate preparation for metric fasteners and core holes The set follows the DIN 373 principle to ensure repeatable, standard-compliant countersinking for threaded fasteners in the M3–M10 range. The integrated fixed pilot pin centres the tool in a prepared core hole, reducing wander and minimising the risk of misaligned screw seating. This reliable centring function leads to fewer rejects and rework cycles, which supports a steady production flow and consistent assembly quality across batches. Stable cutting action with efficient chip evacuation Manufactured from HSS, the tools combine hardness and toughness for general-purpose metalworking. The spiral-fluted geometry, together with three cutting edges, produces a uniform surface finish and helps evacuate chips away from the cutting zone, lowering the chance of clogging and heat build-up. This cutting concept enhances process stability during series work and contributes to longer in-service intervals between tool checks. Compact set for organised workshop handling Supplied as a 6-piece assortment in a plastic cassette, the set keeps all sizes accessible and protected during storage and transport. Each tool features a cylindrical shank for straightforward mounting in standard collets and drill chucks, enabling rapid tool changes and reduced setup time. The combination of a clearly indexed cassette and standard shank form supports efficient line-side use and a tidier workstation. For reliable metric countersinking and practical workshop logistics, contact Metav Werkzeuge for detailed specification support and availability — call +49 2822 7131930 or email info@metav-werkzeuge.com to discuss the TECWERK set and suitable accessories Technical data Article number: 2000865390NW Name: HSS flat countersink set DIN 373 M3–M10 Brand: TECWERK Pack unit: 1 Contents: 6-piece Core technical data Standard: DIN 373 Material: HSS Cutting edges: 3 Thread range: M3–M10 Shank: cylindrical Special features Spiral-fluted design Fixed pilot pin Plastic cassette packaging Suitable for core-hole centring FAQ Which thread sizes are covered by this set? The TECWERK HSS flat countersink set DIN 373 covers metric thread sizes from M3 to M10, providing the appropriate countersink geometry for those screw diameters. How many tools are included and how are they supplied? The set contains six tools and is supplied in a plastic cassette for organised storage and quick access to each size. What standard does the tool geometry follow? The countersinks conform to DIN 373 dimensions and cutting geometry, ensuring compatibility with standard metric fastener seating requirements. How does the fixed pilot pin improve results? The fixed pilot pin ensures accurate centring in a prepared core hole, reducing tool wander and helping to achieve consistent countersink positions and even screw seating. Which tool holders are suitable for these countersinks? Each tool is fitted with a cylindrical shank suitable for standard collet chucks and drill chucks commonly used in workshop drilling and countersinking operations. Manufacturer / Responsible: NORDWEST Handel AG, Robert-Schuman-Straße 17, 44263 Dortmund

Take advantage of a hard-wearing HSS geometry and a three‑flute spiral design for consistent, burr‑free chamfering; the fixed pilot pin and M3–M10 range ensure centred starts and reduced rework. Order the set via Metav Werkzeuge or consult the team for application advice. TECWERK Replacement Countersink Set DIN 373 – HSS, 3‑Flute, M3–M10 (6‑piece) A TECWERK replacement countersink set engineered for precise chamfering and clean thread starts across metric sizes in workshops and light production environments HSS 3‑flute spiral design Fixed pilot pin for centred operation Covers threads M3–M10 Supplied in durable plastic cassette Consistent thread starts through centred pilot guidance The three‑cut geometry and fixed pilot pin deliver reliable centring for each chamfer, which reduces the risk of misaligned thread entries and minimises rework. Built to DIN 373 dimensions, the toolset provides repeatable results on threaded holes so machining tolerance is preserved and subsequent tapping operations run smoothly. The HSS cutting material maintains a sharp edge for a predictable finish without excessive force, supporting steadier cycle times and fewer scrap parts. Reduced downtime with robust spiral‑fluted cutters and storage The spiral‑fluted design evacuates material evenly, improving chip flow and avoiding clogging during serial work. With a cylindrical shank and standardised mounting interface the cutters interchange quickly, while the 6‑piece set in a protective plastic cassette keeps tools organised and ready for use. This configuration cuts changeover time and helps maintain a tidy toolroom, contributing to steady throughput and lower handling errors. Broad metric coverage for versatile workshop use Covering M3–M10 thread sizes in one set eliminates the need for multiple single cutters and simplifies inventory management. The combination of three cutting edges and HSS construction balances edge life with ease of resharpening, making the set suitable for frequent chamfering tasks in mixed‑use environments. Clear labelling in the cassette supports rapid selection, while the standard compliance guarantees compatibility with existing tooling systems and fixtures. For procurement or technical clarification regarding TECWERK countersinks, contact Metav Werkzeuge for order placement and advisory support at info@metav-werkzeuge.com or by phone on +49 2822 7131930 Technical data Article number: 2000865360NW SKU: 2000865360NW Manufacturer: TECWERK Item name: Replacement countersink set DIN 373 M3–M10 medium Packaging unit: 1 Contents: 6‑piece set (plastic cassette) Core data Thread range: M3–M10 Cutting edges: 3 Standard: DIN 373 Shank type: cylindrical Materials and special features Material: HSS Geometry: spiral‑fluted, 3‑flute Pilot: fixed pilot pin Packaging: plastic cassette Intended use: countersinking and chamfering threaded holes FAQ Which metric thread sizes are covered by this set? The TECWERK replacement countersink set covers thread sizes from M3 to M10 and is supplied as SKU 2000865360NW. What material are the cutters made from and what does that mean for durability? The cutters are manufactured from HSS, which offers a good balance of toughness and wear resistance for chamfering tasks, extending tool life in routine workshop applications. How many pieces are included and how are they stored? The delivery contains a 6‑piece set stored in a durable plastic cassette for organised transport and straightforward identification. Is a pilot pin included and what is its benefit? Yes, the set features a fixed pilot pin that ensures centred chamfering to reduce the likelihood of cross‑threading and to support consistent thread engagement. Does the set conform to any standard? The tooling conforms to DIN 373 specifications and uses a three‑flute spiral geometry for reliable chip evacuation and finish quality. Manufacturer / Responsible: NORDWEST Handel AG, Robert‑Schuman‑Straße 17, 44263 Dortmund

Flachsenker DIN 373 M10 Güte fein f.DL HSS Z.3 TECWERK — Flachsenker Der Flachsenker DIN 373 M10 Güte fein f.DL HSS Z.3 TECWERK ist ein präzises Zerspanungswerkzeug zum grat- und ratterfreien Herstellen von Senkungen für Zylinderkopfschrauben, Sechskantschrauben und Muttern in Metallwerkstoffen HSS-Flachsenker nach DIN 373 180° Senkwinkel für Zylinderkopfschrauben Zylinderschaft mit festem Führungszapfen Drei Schneiden für ruhigen Schnitt Ideal für Stahl, Guss und Leichtmetalle Präzision und Produktivität für industrielle Senkarbeiten Der Einsatz von HSS in Kombination mit dem 180° Senkwinkel ermöglicht exakte Senktiefen und saubere Kanten bei Schrauben- und Mutterverbindungen. Durch die drei Schneiden reduziert sich die Schnittkraft, was besonders bei Durchgangslöchern mit dem Gütegrad fein zu einem ruhigen Lauf und weniger Vibrationen führt. Die dadurch resultierende Zeitersparnis und die verringerte Nacharbeit machen das Werkzeug wirtschaftlich attraktiv für Fertigungslinien und Werkstätten. Materialvielfalt und Schnittverhalten sicher nutzen Der Flachsenker wurde für die Bearbeitung von Stahl, Guss, Buntmetallen und Leichtmetallen entwickelt; beste Ergebnisse zeigen sich bei niedriger Schnittgeschwindigkeit. Die Angabe Vorschub 0,2 mm/U (bei Stahl bis 500 N) bietet eine praktikable Orientierung für die Maschineneinstellung und sorgt für reproduzierbare Senkergebnisse ohne Gratbildung. Konstruktion, Standzeit und Handhabung Die Kombination aus Zylinderschaft und festem Führungszapfen gewährleistet sichere Führung im Durchgangsloch und minimiert die Gefahr von Ausriss. Die Geometrie mit drei Schneiden optimiert Spanabfuhr und Standzeit; Anwender profitieren von geringerer Werkzeugbelastung und konstanten Oberflächenqualitäten. Für Anwender mit begrenztem Fachwissen: HSS steht für Hochleistungs-Schnellstahl, ein Werkzeugstahl, der für zähigkeitsfordernde Schnitte entwickelt wurde. Für wen dieses Werkzeug entwickelt wurde Kernzielgruppe sind industrielle Anwender, Instandhaltungsbetriebe und metallverarbeitende Werkstätten, die wiederkehrende Senkaufgaben in Serie ausführen. Das Werkzeug eignet sich besonders, wenn eine hohe Oberflächenqualität verlangt wird und Nacharbeiten vermieden werden sollen. Fertigungsleiter und Einkäufer schätzen die Kombination aus Präzision, Verfügbarkeit und Kompatibilität zu gängigen DIN-Normen. Hinweis zur Anwendung und Optimierung Für optimale Ergebnisse empfiehlt sich die Wahl einer niedrigen Schnittgeschwindigkeit sowie eine geeignete Kühlschmierstoff-Strategie. Die moderate Vorschubempfehlung reduziert Wärmeentwicklung und sorgt für gleichmäßige Schnittleistung. Bei Unsicherheiten zu Maschinenparametern oder Einspannwinkeln hilft die technische Beratung von Metav weiter. Für präzise, gratfreie Senkungen empfiehlt sich der Einsatz des HSS‑Flachsenkers von TECWERK mit 180° Senkwinkel — bei Fragen zur Anwendung oder zur Verfügbarkeit wenden Sie sich an Metav Werkzeuge: info@metav-werkzeuge.com, Tel. +49 2822 7131930 Produktmerkmale Artikelnummer: 2000865336NW Marke: TECWERK Bezeichnung: Flachsenker DIN 373 M10 Güte fein f.DL HSS Z.3 TECWERK Verpackungseinheit: 1 Fakten Schneidenanzahl: 3 Vorschub in Stahl bis 500 N: 0,2 mm/U Senkwinkel: 180° Besonderheiten HSS: Hochleistungs-Schnellstahl DIN 373: Norm für Flachsenker Zylinderschaft Fester Führungszapfen Gütegrad: fein für Durchgangsloch Anwendung: Senkungen für Zylinderkopfschrauben, Sechskantschrauben und Muttern Einsatzmaterialien: Stahl, Guss, Bunt- und Leichtmetalle Beste Ergebnisse bei niedriger Schnittgeschwindigkeit FAQ Für welche Werkstoffe eignet sich der Flachsenker am besten? Der TECWERK Flachsenker eignet sich für Stahl, Guss, Buntmetalle und Leichtmetalle; bei niedriger Schnittgeschwindigkeit werden die besten Oberflächen erreicht. Welche Bedeutung hat der Gütegrad „fein“ beim Flachsenker? Der Gütegrad fein bezeichnet die Geometrie und Oberflächengüte speziell für Durchgangslöcher; er sorgt für saubere Senkkanten und reduziert Nachbearbeitung bei industriellen Hinterschneidungen. Wie beeinflusst die Schneidenanzahl die Anwendung? Die drei Schneiden des Flachsenkers führen zu ruhigerem Lauf und gleichmäßiger Spanabfuhr, was Standzeit und Oberflächenqualität verbessert. Ist der Führungszapfen für selbstzentrierende Anwendung gedacht? Der feste Führungszapfen stabilisiert den Lauf im Durchgangsloch und minimiert Ausrisse; er verbessert die Reproduzierbarkeit bei Serienbearbeitung. Welche Maschineneinstellungen werden empfohlen? Als Ausgangswert gilt der Vorschub von 0,2 mm/U in Stahl bis 500 N; die Schnittgeschwindigkeit sollte niedrig gewählt werden, um Gratbildung zu vermeiden. Hersteller: Manufacturer/Responsible: NORDWEST Handel AG; Robert‑Schuman‑Straße 17; 44263 Dortmund

Take advantage of precise, standard-compliant countersinking combined with efficient chip evacuation and secure clamping for fewer reworks and a steadier workflow; order via Metav Werkzeuge or consult the team for a tailored recommendation. Ruko flat countersink set DIN 373, HSS, for M3–M10 Ruko flat countersink set DIN 373, HSS, for M3–M10 is designed for producing clean, flat countersinks for metric threaded holes in a workshop or production environment HSS construction for long tool life Spiral-fluted design for efficient chip removal Fixed pilot pin for precise centring Cylindrical shank for secure clamping Accurate, standard-compliant countersinking that reduces rework The DIN 373 specification ensures a reproducible geometry for flat countersinks, which translates into consistent seating for fasteners and fewer assembly issues. Made from HSS, the cutters are designed to retain cutting performance under repeated use; this high-speed tool steel provides a balance of toughness and wear resistance. The integrated fixed pilot pin centres the tool in the pre-drilled hole, so concentricity is improved and the risk of burr formation is reduced. As a result, post-process finishing and corrective work are minimised, supporting a smoother production flow and predictable results. Efficient chip control and robust cutting geometry for higher uptime The spiral-fluted design combined with three cutting edges promotes controlled chip formation and fast evacuation from the hole, lowering the chance of clogging and heat build-up. The three-cutting-edge geometry also distributes cutting forces evenly, which supports a stable cut and extends tool life. With a cylindrical shank compatible with standard chucks and holders, the cutters maintain secure clamping and reduce vibration—this improves surface quality and helps to keep set-up times short, contributing to measurable gains in workshop efficiency. Compact organisation and practical range for everyday workshop use Covering thread sizes from M3–M10, the set provides the common dimensions required for routine thread preparation in maintenance, assembly and light production tasks. The cutters are supplied in a plastic cassette that keeps each tool organised and protected, easing tool selection and storage at the bench. The combination of standard geometry, durable material and thoughtful packaging makes the set a practical addition to any precision workshop, where consistent countersinking and quick tool changes support reliable assembly operations. For expert advice on the Ruko flat countersink set or to arrange supply, contact Metav Werkzeuge via info@metav-werkzeuge.com or call +49 2822 7131930 — the Metav team provides tailored procurement and reliable delivery from Emmerich. Technical data Article number: 4000601842NW Item designation: Flat countersink set DIN 373 M3–M10, HSS Facts Thread range: M3–M10 Cutting edges: 3 Standard: DIN 373 Shank: cylindrical Material: HSS Contents: 6 items Special features Spiral-fluted geometry Fixed pilot pin for centring Plastic cassette for storage Countersinks for M3, M4, M5, M6, M8, M10 FAQ What standard does the countersink set comply with? The set is manufactured to DIN 373, ensuring standardised flat countersink geometry for repeatable seating of fasteners. Which materials are suitable for countersinking with this set? The HSS construction is suitable for general workshop materials commonly encountered in assembly and maintenance; tool selection should be matched to the specific material and application. How does the fixed pilot pin improve results? The fixed pilot pin provides reliable centring in pre-drilled holes, reducing run-out and burrs and thereby improving the finish around the threaded hole. Are the cutters compatible with standard chucks? Yes, the cylindrical shank format is intended for secure clamping in common drill chucks and tool holders used in routine workshop operations. Does the set include all common thread sizes for metric fasteners? The set covers metric thread sizes from M3–M10, providing the common dimensions needed for many fastening tasks Manufacturer/Responsible: Ruko GmbH Präzisionswerkzeuge, Robert-Bosch-Strasse 7, 71088 Holzgerlingen

High-performance spotfacing and clean chip evacuation combine with robust guidance and convenient storage to keep production running smoothly; the set’s HSS construction and three cutting edges provide fast, accurate chamfering for metric threads. Order directly via Metav Werkzeuge or consult their specialists for integration advice. RUKO countersink insert set DIN 373 M3–M10 — HSS, 3-flute, for threaded core holes RUKO countersink insert set DIN 373 M3–M10 designed for precise spotfacing of threaded core holes in metric threads, offering reliable seating for screw heads and straightforward integration into standard tool-holding systems HSS, three cutting edges Conforms to DIN 373 For thread sizes M3–M10 Supplied in plastic cassette Precise spotfacing that secures fasteners reliably The set is made to deliver consistent spotfaces for metric threads, complying with DIN 373 to ensure repeatable results. Built in HSS, the cutters maintain edge integrity during routine operations while the three cutting edges reduce cutting load and help produce a homogenous bearing surface for screw heads. This targeted geometry minimises rework and supports stable assembly, so cycle times remain predictable and component fit is improved. Robust guidance and chip control for stable machining Guidance is provided by a fixed pilot pin, which centres the cutter in the core hole and reduces runout, while the cylindrical shank fits standard holders for quick tool changes. Spiral flutes aid chip evacuation, preventing clogging and helping to keep the machined chamfer free from burring. Together these features translate into fewer interruptions on the shop floor and a more consistent surface finish on each component. Organised storage and process reliability for the workshop The set arrives in a plastic cassette, keeping the cutters protected and organised at the bench; this simple storage solution supports efficient tool selection and reduces the risk of mix-ups. Covering the common thread range M3–M10 in one package streamlines tooling lists and lowers the number of changeovers during small-batch and repair work. Supplied by a trusted distributor, the product fits well in workflows that value traceability and predictable quality. Contact Metav Werkzeuge for tailored advice on deploying the RUKO HSS countersink inserts in production; Metav Werkzeuge ships from Emmerich and provides technical guidance via info@metav-werkzeuge.com or +49 2822 7131930 Technical Data Article number: 4000601846NW Product label: countersink insert set DIN 373 M3–M10 for core holes, HSS, bright, 3 flutes, plastic cassette, RUKO Manufacturer: Ruko GmbH SKU: 4000601846NW Packaging unit: 1 Core data Thread range: M3–M10 Cutting edges: 3 Shank: cylindrical Fluting: spiral Guidance: fixed pilot pin Content: 6 units Special features Material: HSS (high-speed steel) Standard: DIN 373 Packaging: plastic cassette Brand: RUKO Application: spotfacing for threaded core holes FAQ Which thread sizes are covered by this countersink set? The RUKO countersink insert set DIN 373 covers metric thread sizes from M3 to M10, providing the necessary diameters for common fastening applications. What material are the cutters made of? The cutters are manufactured from HSS (high-speed steel), chosen for its balance of toughness and wear resistance in general-purpose metalworking. How is the cutter guided during machining? Guidance is achieved with a fixed pilot pin, which centres the cutter in the core hole to reduce runout and improve concentricity for accurate spotfacing. How are the inserts supplied for storage and transport? The set is supplied in a plastic cassette, offering protected storage and easy organisation at the workstation. Which standard does the set conform to? The set is made to DIN 373, ensuring dimensional and functional compatibility with standard spotfacing requirements. Ruko GmbH: Manufacturer/Responsible: Ruko GmbH Präzisionswerkzeuge, Robert-Bosch-Strasse 7, 71088 Holzgerlingen

Flachsenker DIN 373 M10 für Kernloch HSS Z.3 – TECWERK Der Flachsenker DIN 373 M10 f. Kernloch HSS Z.3 TECWERK ist ein präzises Werkzeug zur Herstellung gratfreier Senkungen für Zylinderkopfschrauben, Sechskantschrauben und Muttern und eignet sich besonders für Stahl, Guss sowie Bunt- und Leichtmetalle Flachsenker nach DIN 373 HSS Zylinderschaft mit festem Führungszapfen Senkwinkel 180° für exakte Sitzflächen 3 Schneiden für ruhigen Lauf, Vorschub 0,2 mm/U Material und Aufbau für langlebige Ergebnisse Der Flachsenker besteht aus HSS und ist nach DIN 373 ausgelegt, was robuste mechanische Eigenschaften und hohe Wärmebeständigkeit garantiert. Der Zylinderschaft sorgt für sicheren Halt im Spannfutter, der feste Führungszapfen führt den Läufer exakt in der Kernlochbohrung. Durch die Konstruktion mit 3 Schneiden reduziert sich die Belastung auf einzelne Schneiden, was die Standzeit erhöht und den Verschleiß verringert Präzision bei Senkungen: Effiziente Prozessführung Mit einem Senkwinkel 180° erzeugt das Werkzeug planebene Sitzflächen für Schraubenköpfe und Muttern; dadurch entfällt oft aufwendiges Nacharbeiten. Der empfohlene Vorschub 0,2 mm/U in Stahl bis 500 N unterstützt einen ruhigen Schnitt und minimiert Rattern. Die Kombination aus Geometrie und Schneidenzahl führt zu gratfreien Ergebnissen, die sich direkt in weniger Montageaufwand und höherer Prozesssicherheit auszahlen Anwendungsfelder und Werkstoffvielfalt Der Einsatzbereich umfasst Stahl, Guss sowie Bunt- und Leichtmetalle; dadurch passt der Flachsenker in viele Fertigungsprozesse von Reparaturarbeiten bis zur Serienbearbeitung. Der Gütegrad für Kernloch signalisiert, dass das Werkzeug speziell für nachfolgende Passungen und Schraubverbindungen entwickelt wurde. Anwender profitieren von konstanter Maßtreue und zuverlässiger Formgebung der Senkungen Zielgruppe und praktische Einsatzempfehlung Konzepte in Werkstatt, Instandhaltung und Fertigung profitieren gleichermaßen: Bediener in der Montage, Zerspanungstechniker und Wartungspersonal erhalten mit diesem Flachsenker ein unkompliziertes Werkzeug für wiederholbare Ergebnisse. Die Bauform erlaubt den Einsatz in üblichen Bohrfuttern mit Zylinderschaft; für optimale Lebensdauer empfiehlt sich das Arbeiten bei moderaten Schnittgeschwindigkeiten Produktvorteile im Fertigungsalltag Im Betrieb reduziert das Werkzeug Nacharbeit durch saubere Senkungen und sorgt für gleichbleibende Montagequalität. Die robuste HSS-Ausführung und die geprüfte Geometrie tragen zur Wirtschaftlichkeit bei, weil weniger Werkzeuge benötigt und weniger Ausschuss produziert wird. Schnelle Rüstzeiten und die einfache Handhabung erhöhen die Produktivität bei wiederkehrenden Senkoperationen Für präzise, gratfreie Senkungen empfiehlt Metav den Einsatz des Flachsenker HSS von TECWERK – Angebote und Beratung per eMail info@metav-werkzeuge.com oder Telefon +49 2822 7131930 Produktmerkmale Artikelnummer: 2000865350NW Marke: TECWERK Bezeichnung: Flachsenker DIN 373 M10 f.Kernloch HSS Z.3 TECWERK Verpackungseinheit: 1 Fakten Schneidenanzahl: 3 Vorschub in Stahl bis 500 N: 0,2 mm/U Senkwinkel: 180° Besonderheiten HSS (Schnellarbeitsstahl) DIN 373 (Norm für Flachsenker) Zylinderschaft fester Führungszapfen Zur Herstellung von Senkungen für Zylinderkopfschrauben, Sechskantschrauben und Muttern Ideal zum grat- und ratterfreien Senken bei Stahl und Guss, Bunt- und Leichtmetallen Gütegrad: für Kernloch Beste Ergebnisse bei niedriger Schnittgeschwindigkeit FAQ Welche Werkstoffe lässt sich mit dem Flachsenker bearbeiten? Der Flachsenker von TECWERK eignet sich für Stahl, Guss sowie Bunt- und Leichtmetalle; die Geometrie ist auf gratfreie Senkungen bei diesen Werkstoffen ausgelegt Für welche Schraubentypen ist das Werkzeug vorgesehen? Das Werkzeug ist ausgelegt zur Herstellung von Senkungen für Zylinderkopfschrauben, Sechskantschrauben und Muttern; dadurch entstehen planebene Sitzflächen für zuverlässige Verbindungen Welche Schnittdaten liefern zuverlässige Ergebnisse? Als Richtwert gilt ein Vorschub von 0,2 mm/U in Stahl bis 500 N; zudem führen niedrigere Schnittgeschwindigkeiten in vielen Fällen zu besseren, ratterfreien Ergebnissen Wie trägt die Konstruktion zur Standzeit bei? Die Kombination aus HSS, 3 Schneiden und stabiler Führungsgeometrie verringert die Einzelbelastung der Schneiden und erhöht damit die Standzeit gegenüber einfacheren Ausführungen Hersteller: Manufacturer / Responsible: NORDWEST Handel AG, Robert-Schuman-Straße 17, 44263 Dortmund

Take advantage of precise, burr-free countersinking thanks to the HSS construction, three cutting edges and a 180° sink angle; the medium-grade design delivers consistent results for through holes. Order the tool directly via Metav Werkzeuge or contact the consultants for specification advice. Flat countersink DIN 373 M10 (HSS) – TECWERK, 180° A Flat countersink DIN 373 M10 engineered for burr-free recesses for cylinder head screws, hex bolts and nuts across steel, cast iron and non-ferrous metals. HSS construction for long tool life 180° angle for flat, precise recesses Three cutting edges for smooth surface finish Cylindrical shank with fixed pilot for guidance High-precision countersinking that reduces rework The countersink is made from HSS, offering a good balance between toughness and wear resistance for everyday workshop use. With three cutting edges and a 180° geometry, the tool produces a flat seating surface that significantly reduces burr formation and secondary deburring. The specified feed of 0.2 mm/rev in steel and the recommendation for low cutting speeds ensure stable chip formation and consistent results, making the tool suitable for production runs where repeatability is essential. Robust design for reliable workshop operation Built with a cylindrical shank and a fixed pilot, this countersinking tool maintains concentricity and prevents wandering during through-hole operations. The medium grade tailored for through holes balances cost and performance, delivering burr-free and chatter-free countersinks in both ferrous and non-ferrous materials. The sturdy design minimises tool change frequency and helps maintain cycle-time stability on manual and CNC machines alike. Practical use and integration into production workflows This countersink is intended for creating recesses for cylinder head screws, hex bolts and nuts and achieves the best results at moderate cutting parameters. For raised efficiency, use the tool immediately after drilling a through hole and avoid excessive spindle speeds to preserve the cutting edge. The construction supports reliable countersinking in cast iron and aluminium alloys, reducing the need for downstream finishing and improving overall process economics. Discuss technical details or order TECWERK countersinks through Metav Werkzeuge by emailing info@metav-werkzeuge.com or calling +49 2822 7131930 for fast delivery from Emmerich Technical data Article number: 2000865343NW Product label: Flachsenker DIN 373 M10 Güte mittel f.DL HSS Z.3 TECWERK Packaging unit: 1 Facts Cutting edges: 3 Countersink angle: 180° Recommended feed in steel (≤ 500 N): 0.2 mm/rev Grade: medium (for through holes) Special features Material: HSS Shank type: cylindrical shank Guidance: fixed pilot Suitable for: steel, cast iron, non-ferrous and light metals Application: countersinking for cylinder head screws, hex bolts and nuts Performance note: ideal for burr- and chatter-free countersinking at low cutting speeds FAQ What materials can be processed with this countersink? The TECWERK Flat countersink DIN 373 M10 is suitable for steel, cast iron and various non-ferrous alloys; it delivers best results when used at lower cutting speeds. How many cutting edges does the tool have and why does that matter? The tool has three cutting edges; this geometry improves surface finish and reduces chatter compared with two-edged designs, giving a smoother, burr-reduced recess. Is the countersink suitable for through-hole countersinking? Yes, the medium grade is specified for through-hole use and the fixed pilot ensures guided entry and concentricity in through-hole countersinking. What feed and speed settings are recommended for steel? A feed of around 0.2 mm/rev in steel (up to 500 N) is recommended, combined with modest spindle speeds to preserve edge life and produce clean chips. Which fasteners is this countersink designed for? This countersink is intended for creating recesses for cylinder head screws, hex bolts and nuts; the 180° angle produces a flat seating surface suitable for those head forms. Manufacturer/Responsible: NORDWEST Handel AG, Robert-Schuman-Straße 17, 44263 Dortmund

Take advantage of a durable HSS construction, a 180° countersink angle and three cutting edges for burr-free results; these features combine to deliver reliable countersinking across steels and light metals. Order the countersink directly via Metav Werkzeuge or ask our consultants if needed. TECWERK Countersink DIN 373 M12 — HSS, 180°, 3-flute TECWERK Countersink DIN 373 M12 is a helical countersinking tool designed for producing clean, burr-free recesses for cylinder head screws, hex screws and nuts in a variety of materials 180° countersink angle for flush fittings High-speed steel (HSS) construction Cylindrical shank with fixed pilot Three cutting edges for burr-free finish Precision and longevity with solid high-speed steel The HSS material offers a robust combination of toughness and wear resistance that keeps the cutting geometry stable under load. This countersinking tool is specified to DIN 373, which standardises dimensions and fit for predictable installation; the three cutting edges reduce vibration and improve chip evacuation, resulting in a burr-free finish. For operations where component integrity matters, the solid high-speed steel body provides reproducible results and longer tool life compared with mild-steel alternatives. Designed for controlled, low-speed performance A fixed pilot and cylindrical shank ensure concentricity in through-holes and guide the tool reliably into position, reducing the risk of chatter. The geometry is optimised for best results at low cutting speed, with a recommended feed in steel up to 500 N of 0.2 mm/rev; this balance of speed and feed delivers clean countersinks without material tearing. The specified 180° angle creates a large seating surface for screw heads, improving joint stability and cosmetic appearance. Broad material compatibility and application benefits Engineered for use in steel, cast iron, and a broad range of non-ferrous and light metals, the tool is particularly suitable for through-hole countersinking where a medium-grade performance level is required. The combination of geometry and material allows for effective deburring and a consistent surface finish, reducing subsequent manual rework. In production settings, the tool supports efficiency by delivering a repeatable result for cylinder and hex fasteners. Practical operation and workshop integration The standardised shank fits common chucks and toolholders, facilitating quick tool changes and integration into existing machining processes. The medium quality grade specified for through holes offers a compromise between cost-effectiveness and precision, making this countersink appropriate for both workshop repairs and small-batch production. Operators benefit from predictable tool behaviour and simplified setup, helping to maintain steady throughput without sacrificing hole quality. For reliable countersinking with TECWERK quality and Metav’s supply assurance, contact Metav Werkzeuge for consultancy and prompt delivery from Emmerich — email info@metav-werkzeuge.com or call +49 2822 7131930 Technical Data Article number: 2000865344NW Label: Flachsenker DIN 373 M12 Güte mittel f.DL HSS Z.3 TECWERK Manufacturer: TECWERK Packaging unit: 1 Facts Countersink angle: 180° Cutting edges: 3 Feed in steel (≤500 N): 0.2 mm/rev Standard: DIN 373 Special features Material: HSS Shank: cylindrical shank with fixed pilot Applications: countersinking for cylinder head screws, hex screws and nuts Suitable for: steel, cast iron, non-ferrous and light metals Performance note: best results at low cutting speed Grade: medium quality for through-hole countersinking FAQ What materials can this countersink be used on? The TECWERK countersink DIN 373 M12 is suitable for steel, cast iron and a range of non‑ferrous and light metals. What is the recommended feed for steel applications? For steel up to 500 N the recommended feed is 0.2 mm per revolution when using the TECWERK countersink. Which countersink angle does the tool have? The tool features a 180° countersink angle, providing a wide seating surface for fastener heads. How many cutting edges does the countersink have and what is the benefit? The countersink has three cutting edges; this reduces vibration and improves chip removal, yielding a burr‑free finish with consistent surface quality. Is the shank compatible with standard chucks? Yes, the cylindrical shank with fixed pilot is designed for compatibility with common chucks and tool holders to simplify tool changes. Manufacturer/Responsible: NORDWEST Handel AG, Robert‑Schuman‑Straße 17, 44263 Dortmund

Take advantage of the combination of HSS construction, a 180° countersink angle and a three‑flute geometry for clean, chatter‑free countersinking in steel and cast iron; order the tool directly via Metav Werkzeuge or consult the specialists for machining parameter recommendations. TECWERK Countersink DIN 373 M3 — HSS, 3‑flute, 180° TECWERK Countersink DIN 373 M3 for precise through‑hole countersinking of cylinder head and hex screws in steel, cast iron and non‑ferrous metals HSS construction for robust cutting performance 180° countersink angle for flush seating Three cutting edges for chatter‑free finishing Cylinder shank with fixed pilot for accurate alignment Precise, burr‑free countersinking for through holes The TECWERK Countersink DIN 373 M3 is designed to produce clean, dimensionally consistent countersinks for cylinder head screws, hex screws and nuts. The tool conforms to DIN 373 and the fine grade specification for through holes, which ensures predictable seat geometry and minimal rework. The three‑flute cutter geometry distributes cutting forces evenly, reducing the tendency to chatter and producing a smoother surface finish — a concrete advantage when working with components destined for assembly where bolt seating and contact area are critical. Consistent performance with conservative machining parameters For reliable process planning, the cutter achieves best results at low cutting speeds; the specified feed in steel (up to 500 N) is 0.14 mm/rev, which balances material removal and surface integrity. The HSS material provides toughness and abrasion resistance across common workshop applications, while the 180° countersink angle guarantees a flush seating profile for standard fasteners. The cylinder shank combined with a fixed pilot ensures concentric guidance in through holes, so concentricity and perpendicularity are easier to maintain on conventional drilling machines and compact machining centres. Wide material compatibility and reduction of finishing steps This countersink is suitable for a broad range of materials including steel, cast iron, non‑ferrous and light metals, enabling a single tool to cover multiple operations on a production line or in a service shop. The geometry and grade are optimised for deburr‑free cutting, which reduces subsequent finishing steps and supports higher throughput. In practice, this means fewer tool changes, less manual deburring and a lower rate of fastener misfit — positively affecting overall efficiency and repeatability in small‑batch and serial production. Practical benefits for workshop integration and tool management The tool’s standard shank form and robust HSS construction simplify tool handling and mounting in common collets and chucks; the fixed pilot aids fast setup and repeatable alignment. These attributes contribute to predictable tool life and consistent part quality, helping to lower scrap rates and stabilise process capability. When planning tooling kits for assembly work or maintenance tasks, the combination of DIN conformity, fine grade, and a three‑edge cutting geometry offers a practical balance between cost‑efficiency and precision. Contact Metav Werkzeuge for tailored machining advice and to secure the TECWERK HSS DIN 373 M3 countersink for accurate, repeatable through‑hole countersinking. Technical Data Article number: 2000865331NW Item name: Flachsenker DIN 373 M3 Güte fein f.DL HSS Z.3 TECWERK Manufacturer: TECWERK Packaging unit: 1 UID: 2000865331NW Facts Countersink angle: 180° Cutting edges: 3 Feed in steel (up to 500 N): 0.14 mm/rev Special features Material: HSS Standard: DIN 373 Shank: cylinder shank with fixed pilot Application: countersinking for cylinder head screws, hex screws and nuts Suitable materials: steel, cast iron, non‑ferrous and light metals Best results at low cutting speed Grade: fine grade for through holes FAQ Which materials are suitable for this countersink? The TECWERK Countersink DIN 373 M3 (HSS, 3‑flute) is suitable for steel, cast iron, and non‑ferrous and light metals, offering versatile workshop use. What is the countersink angle and why does it matter? The countersink angle is 180°, which produces a flat seating surface for many cylinder head and hex screws, ensuring proper contact and load distribution. What feed rate is recommended for steel applications? A feed of 0.14 mm/rev is indicated for steel at cutting forces up to 500 N, providing a compromise between surface finish and efficient material removal. Is the tool suitable for through‑hole countersinking? Yes, the tool is specified as a fine grade for through holes, making it appropriate where consistent seat geometry is required across mating parts. How does the fixed pilot improve results? The fixed pilot on the cylinder shank stabilises the cutter in the hole, improving concentricity and reducing the risk of misalignment during countersinking. Manufacturer/Responsible: NORDWEST Handel AG, Robert‑Schuman‑Straße 17, 44263 Dortmund

Combine robust HSS construction, a 180° countersink angle and a fixed pilot pin for burr-free seating of fasteners; order this tool directly via Metav Werkzeuge or request application advice from our consultants. TECWERK flat countersink DIN 373 M3 (HSS, 3 flutes) A TECWERK flat countersink DIN 373 M3 engineered to create precise, burr-free countersinks for cylinder head screws, hex screws and nuts in steel and non‑ferrous materials HSS, DIN 373 standard compliance 180° countersink angle for flat seats Cylindrical shank with fixed pilot pin Three cutting edges for clean results Precise seating for threaded assemblies The design focuses on reliable, repeatable results when producing flat seats for fasteners. Made from HSS and complying with DIN 373, the tool provides a defined cutting geometry with a 180° countersink angle and three cutting edges, which together ensure concentric, flat seats for cylinder head and hex screws. These characteristics reduce the need for secondary finishing and support consistent assembly tolerances in production runs. Clean machining and reduced rework A combination of the fixed pilot pin and the cylindrical shank stabilises the tool during operation, allowing clean material removal and minimised chatter. The three‑edge geometry is optimised to deliver burr-free results across a range of materials, notably steel and cast iron as well as brass and light alloys. Best outcomes are achieved at low cutting speeds, where heat build‑up is limited and edge life is extended, reducing downtime for tool changes and rework. Practical guidance and typical applications Intended primarily for countersinking around a core or pilot hole, the cutter is suitable for producing accurate seats for fasteners and nuts in mechanical assemblies. The recommended feed in steel up to 500 N is 0.14 mm/rev, a practical starting point for achieving a consistent surface; adjust feed and speed according to material and machine rigidity. Conformity to DIN 373 signals compatibility with established workshop processes and makes integration into existing tool sets straightforward. For burr‑free, precision countersinking with TECWERK quality, contact Metav Werkzeuge for availability and technical guidance at info@metav-werkzeuge.com or +49 2822 7131930 Technical Data Article number: 2000865345NW Designation: Flat countersink DIN 373 M3, HSS, 3 flutes Manufacturer: TECWERK Packaging unit: 1 Core specifications Countersink angle: 180° Cutting edges: 3 Recommended feed in steel up to 500 N: 0.14 mm/rev Standard: DIN 373 Materials & special features Material: HSS Cylindrical shank and fixed pilot pin For producing countersinks for cylinder head screws, hex screws and nuts Ideal for burr‑free countersinking in steel, cast iron, brass and light metals Best results at low cutting speed Grade: for core hole FAQ What materials can this countersink machine? The TECWERK flat countersink (SKU 2000865345NW) is designed for steel and cast iron and also performs well in non‑ferrous and light metals such as brass and aluminium. What is the countersink angle and why does it matter? The tool features a 180° countersink angle, which produces a flat seating surface suited to cylinder head screws and nuts, ensuring even load distribution in assemblies. How many cutting edges does the cutter have and what is the benefit? The cutter has three cutting edges, which balance cutting forces for a smoother finish and reduced chatter compared with two‑edge designs. What shank and pilot arrangement does the tool use? The tool is supplied with a cylindrical shank and a fixed pilot pin, providing stable guidance for concentric countersinking around a prepared core hole. What feed rate is recommended for steel? A recommended starting feed for steel up to 500 N is 0.14 mm/rev; actual settings should be adjusted to machine rigidity and workpiece conditions. Manufacturer/Responsible: NORDWEST Handel AG, Robert‑Schuman‑Straße 17, 44263 Dortmund

Achieve burr-free, repeatable countersinks with a fine-grade HSS cutter featuring three cutting edges and a 180° geometry; combined with a cylindrical shank and fixed pilot pin, this tool ensures stable centring and smooth seating of fasteners. Order directly via Metav Werkzeuge or ask the consultants for guidance. TECWERK flat countersink DIN 373 M4 — HSS three-flute countersink, 180° The TECWERK flat countersink DIN 373 M4 is a precision HSS countersink designed for burr- and chatter-free preparation of seating surfaces for cylinder-head and hexagon head screws, nuts and similar fasteners in a range of metals HSS material, DIN 373 standard 180° countersink angle for flush seating Three cutting edges for smooth finish Cylindrical shank with fixed pilot pin Consistent, burr-free countersinking that reduces rework Made from HSS, this three-flute countersink delivers a burr-free finish and predictable chip formation. The three cutting edges distribute cutting forces evenly, which reduces vibration and minimises the risk of chatter when working in mixed materials. As a result, the need for secondary deburring operations is reduced, improving throughput and cutting down rework. The tool’s fine grade specification is optimised for through-hole applications and produces clean countersinks that support secure, flush screw seating. Precise geometry for reliable seating and repeatable results The tool’s 180° countersink angle provides a broad seating surface that suits cylinder-head and hexagon head screws, enabling consistent clamp-up and improved joint integrity. A cylindrical shank combined with a fixed pilot pin secures concentric running and fast, repeatable positioning in pre-drilled holes. This geometry translates into fewer alignment errors during assembly and a predictable surface finish, which is particularly valuable where component fit and aesthetic quality matter. Optimised for common workshop materials and efficient cutting Engineered for reliable performance in steel, cast iron and non-ferrous metals, the cutter achieves its best results at low cutting speed, where its geometry and grade deliver stable cutting. The tool is suitable for a wide range of light alloys and general-purpose workshop tasks, offering a pragmatic balance between tool life and surface quality. Compliance with DIN 373 ensures a standardised form that integrates seamlessly into existing machining routines, while the single-piece supply (packaging unit 1) supports easy stock management. For burr-free countersinking with TECWERK fine-grade HSS cutters, contact Metav Werkzeuge in Emmerich for ordering and technical advice at info@metav-werkzeuge.com or by phone on +49 2822 7131930 Technical data Article number: 2000865332NW Label: Flachsenker DIN 373 M4 Güte fein f.DL HSS Z.3 TECWERK Packaging unit: 1 Manufacturer: TECWERK Core technical data Countersink angle: 180° Number of cutting edges: 3 Feed in steel up to 500 N: 0.16 mm/rev Grade: fine for through hole Standard: DIN 373 Special features Material: HSS Cylindrical shank with fixed pilot pin For countersinking cylinder-head screws, hexagon head screws and nuts Ideal for burr- and chatter-free countersinking in steel, cast iron, non-ferrous and light metals Optimised for best results at low cutting speed FAQ What materials can this countersink handle? The TECWERK flat countersink DIN 373 M4 is suitable for steel, cast iron and non-ferrous metals, offering burr-free countersinking across these material groups. What is the recommended cutting speed for best results? Best results with this fine-grade HSS countersink are achieved at a low cutting speed, which promotes stable cutting and a clean finish. How does the pilot pin affect the countersinking result? The fixed pilot pin ensures accurate centring and reduces the risk of walking, so the countersink maintains concentricity and repeatable seating for fasteners. What size screws is the tool intended for? The cutter is designed to produce countersinks for cylinder-head screws, hexagon head screws and nuts in accordance with its 180° geometry and fine-grade specification. What is the article number for ordering or reference? The article number (SKU) is 2000865332NW for the TECWERK flat countersink DIN 373 M4. Manufacturer / Responsible: NORDWEST Handel AG, Robert-Schuman-Straße 17, 44263 Dortmund

Combining durable HSS construction, a 180° countersink angle and three cutting edges, this countersink ensures burr-free and chatter-free seating for cylinder head and hexagon fasteners; order directly via Metav Werkzeuge or consult the Metav advisors for technical guidance. TECWERK Flat Countersink DIN 373 M5 — HSS, 180° countersink for core holes TECWERK Flat Countersink DIN 373 M5 designed for precise, burr-free countersinking of cylinder head screws, hexagon screws and nuts in steel, cast and non-ferrous materials HSS grade for high wear resistance 180° countersink angle for flush seating Three cutting edges for smooth, burr-free finish Cylindrical shank with fixed pilot pin for accurate centring High-precision countersinking for reliable assemblies The tool is manufactured to the DIN 373 standard in HSS, giving a robust cutting geometry that delivers reproducible results in demanding workshop and production settings. The 180° seating angle produces a true, flush fit for cylinder head and hexagon fasteners, reducing the need for post-process rework. With three cutting edges, the tool spreads cutting forces evenly to produce a burr-free finish, which shortens assembly time and improves joint quality — a direct gain in process reliability and first-pass yield. Consistent cutting performance with defined feeds Designed to perform best at low cutting speed, the countersink achieves superior surface quality when paired with conservative spindle speeds. The specified feed of 0.16 mm/rev in steel (up to 500 N) gives a clear operational target: keep the feed within this range to maintain edge life and avoid chatter. The cylindrical shank ensures stable clamping in standard chucks, while the fixed pilot pin centres the tool in the pre-drilled core hole to prevent wandering — a combination that supports repeatable hole geometry and reduces scrap rates. Broad material range and workshop advantages Suitable for machining steel, cast iron and non-ferrous metals, the countersink delivers reliable deburring and clean chamfers across common production materials. Its designation for use with a core hole means the geometry is matched to typical pre-drilled conditions, saving set-up time. For fabricators and maintenance teams, the tool provides a compact, durable solution that replaces multiple makeshift countersinking attempts — a practical means to improve throughput and maintain a consistent surface quality in assembly applications. For procurement or technical advice on TECWERK flat countersinks, contact Metav Werkzeuge in Emmerich for rapid supply and expert recommendations at info@metav-werkzeuge.com or +49 2822 7131930 Technical Data Article number: 2000865347NW Item label: Flachsenker DIN 373 M5 f.Kernloch HSS Z.3 TECWERK Manufacturer: TECWERK Packaging unit: 1 Facts Material: HSS Countersink angle: 180° Number of cutting edges: 3 Feed in steel (≤ 500 N): 0.16 mm/rev Special features DIN 373 compliant Cylindrical shank with fixed pilot pin For cylinder head screws, hexagon screws and nuts Ideal for burr- and chatter-free countersinking Best results at low cutting speed FAQ Which materials can be machined with this countersink? The TECWERK flat countersink is suitable for steel, cast iron and non‑ferrous metals, offering burr‑free finishing across these common materials. What spindle speed is recommended for best results? Best results are achieved at low cutting speeds; combine conservative spindle speeds with the specified feed of 0.16 mm/rev in steel to preserve edge life and avoid chatter. How does the fixed pilot pin affect performance? The fixed pilot pin centres the countersink in a pre‑drilled core hole, preventing wandering and ensuring consistent chamfer geometry with each pass. Is the tool compatible with standard drill chucks? Yes — the cylindrical shank is designed for secure clamping in standard chucks, enabling quick tool changes and stable operation. What applications is this countersink intended for? It is intended for producing seating surfaces for cylinder head screws, hexagon screws and nuts, particularly where a burr‑free finish and accurate seating are required; SKU 2000865347NW identifies this TECWERK model. Manufacturer / Responsible: NORDWEST Handel AG, Robert‑Schuman‑Straße 17, 44263 Dortmund

Take advantage of the combination of HSS construction, a 180° countersink angle and a three‑edge geometry for burr‑free, chatter‑resistant countersinking; order the tool directly via Metav Werkzeuge or consult the team for application advice. Flat countersink DIN 373 M5 (HSS, 3‑flute) – TECWERK The Flat countersink DIN 373 M5 (HSS, 3‑flute) is a specialised countersinking tool for producing flush seating for cylinder head and hexagon screws across steel, cast iron and non‑ferrous materials. HSS material, DIN 373 specification 180° countersink angle for flush seating Three cutting edges for smooth finish Cylindrical shank with fixed pilot pin Precision countersinking for reliable assembly The TECWERK countersink is engineered to deliver consistent, repeatable seating for fasteners where a clean bearing surface is required. Manufactured to DIN 373 from HSS, the geometry is optimised for through‑hole applications and specified as medium grade for reliable life and predictable wear. The three‑edge design produces an even cutting action that reduces the tendency to grab or skid, which supports dimensional consistency in assemblies and reduces rework in production environments. Consistent surface quality and reduced secondary work A three‑cutting‑edge configuration combines with a 180° seating angle to yield burr‑reduced results that often eliminate the need for subsequent deburring. The fixed pilot pin and cylindrical shank stabilise the tool in the hole, avoiding lateral vibration and chatter; this translates into a superior surface finish on both soft and harder materials. For workshops focused on throughput and first‑time quality, the tool’s ability to produce a clean seat reduces inspection time and downstream corrective operations. Recommended operating parameters explained For best results use a low cutting speed and the specified feed in machinable steels: 0.16 mm/rev in steel up to 500 N load. Low peripheral speed minimises heat build‑up and extends tool life, while the given feed provides a balance between surface finish and efficient material removal. The designation for through hole indicates the tool is optimised for applications where a pilot can run through, ensuring the fixed pilot pin secures alignment and repeatability for each cycle. Practical integration into workshop workflows The tool’s HSS construction and standard shank permit straightforward use in common holders and drill chucks, allowing rapid integration into existing operations without special tooling. Its suitability for steel, cast iron and non‑ferrous and light alloys makes it a versatile choice for mixed‑material production runs. When paired with controlled feed and conservative speeds, the countersink delivers predictable life and consistent seating quality, supporting stable production output and fewer rejects. Contact Metav Werkzeuge for tailored technical advice on the TECWERK flat countersink and to request a quotation—info@metav-werkzeuge.com | +49 2822 7131930 Technical Data Article number: 2000865340NW Label: Flachsenker DIN 373 M5 Güte mittel f.DL HSS Z.3 TECWERK Manufacturer: TECWERK Packaging unit: 1 Data Number of cutting edges: 3 Countersink angle: 180° Feed in steel (up to 500 N): 0.16 mm/rev Grade: Medium (for through hole) Special features Material: HSS Standard: DIN 373 Shank: Cylindrical with fixed pilot pin Suitable for: steel, cast iron, non‑ferrous and light metals Application: Countersinking for cylinder head screws, hexagon screws and nuts Recommended: low cutting speed for best results FAQ What materials is the countersink suitable for? The TECWERK flat countersink (SKU 2000865340NW) is suitable for steel, cast iron, non‑ferrous and light metals as stated in the product specification. What seating angle does the tool provide? The tool has a 180° countersink angle, designed to give flush seating for cylinder head and hexagon screws. How many cutting edges does the countersink have and why does that matter? This countersink features three cutting edges, which provide a smoother cutting action and help to reduce burr formation compared with two‑edge designs. What feed and speed settings are recommended? For steel up to 500 N a feed of 0.16 mm/rev is recommended; the tool achieves best life and finish at low cutting speeds. Which fastener types can be accommodated? The countersink is intended for producing seats for cylinder head screws, hexagon screws and nuts, enabling proper torque transfer and reliable assembly. TECWERK: Manufacturer / Responsible: NORDWEST Handel AG, Robert‑Schuman‑Straße 17, 44263 Dortmund