Take advantage of robust HSS‑Co cutting performance, a true 90° countersink geometry and reliable chip evacuation for consistent, burr‑free chamfers — order directly via Metav Werkzeuge or consult the team for application guidance. Through‑hole countersink 1–4 mm, 90° HSS‑Co (TECWERK) — through‑hole design for secure chip evacuation and clean deburring Through‑hole countersink 1–4 mm, 90° HSS‑Co for burr‑free chamfers and smooth deburring in workshop and production environments HSS‑Co cutting material for high wear resistance 90° countersink angle for precise chamfers Shank Ø 6.35 mm for standard tool holders Consistently precise chamfers that reduce rework The HSS‑Co construction delivers high edge stability and longevity under intermittent loads, producing clean chamfers without tearing. The shearing geometry ensures a controlled cut, so each pass removes burrs rather than crushing them; this translates into fewer secondary operations and a steadier production flow. Using a countersink with defined 90° geometry provides repeatable results when preparing holes for fasteners or creating neat edge finishes. Secure chip control for uninterrupted machining A defining benefit of the design is its through‑hole chip evacuation: chips exit through the centre rather than building up in the flute, which prevents clogging and the risk of the tool seizing in the workpiece. That reliable chip evacuation supports safer, more efficient operation on lathes and drill presses, reduces downtime and protects component surfaces from damage caused by recut swarf. Versatile for common workshop materials with clear feed guidance Engineered for work on steel, cast iron and non‑ferrous metals, the tool delivers best results at lower cutting speeds to preserve edge life and surface quality. For steel applications the recommended feed is around 0.07 mm/rev under cutting forces up to 500 N, which balances chip formation and surface finish. The countersink is also suitable for light alloys where a deliberate, lower speed approach avoids smearing and achieves a sharp edge. Compact dimensions for easy integration into toolsets The combination of a slim shank Ø 6.35 mm and an overall length 45 mm makes the cutter compatible with common collet chucks and quick‑change holders, simplifying setup and replacement. The compact profile supports access in tight fixturing and handheld machines while maintaining stability. The unit is supplied for single‑item workshop stocking and is optimised for simple storage and fast replenishment. For secure supply and practical advice on the TECWERK through‑hole countersink, contact Metav Werkzeuge for tailored recommendations and reliable delivery from Emmerich. Technical data Article number: 2000865145NW Label: Querlochsenker 1-4mm 90Grad HSS-Co TECWERK Manufacturer short: TECWERK Packaging unit: 1 UID: 2000865145NW Numbers / Core technical data Shank diameter: 6.35 mm Overall length: 45 mm Countersink angle: 90° Feed in steel (up to 500 N): 0.07 mm/rev Special features / Versions Cutting material: HSS‑Co Cutting action: shearing cut for burr‑free chamfers Through‑hole design prevents chip jamming Suitable for steel, cast iron, non‑ferrous and light metals Best results at low cutting speed FAQ Which materials is this countersink suitable for? The TECWERK through‑hole countersink is suitable for steel, cast iron, non‑ferrous and light metals, offering burr‑free chamfers on these materials. What feeding rate and cutting conditions are recommended? For steel, aim for a feed of around 0.07 mm/rev under cutting forces up to 500 N and prefer lower cutting speeds to extend tool life and improve finish. What are the shank and overall dimensions? The tool has a shank diameter of 6.35 mm and an overall length of 45 mm, making it compatible with standard collets and holders. How does the through‑hole design affect performance? The through‑hole allows chips to escape via the centre, which prevents clogging, reduces the chance of jamming and produces a cleaner surface without rework. Is the cutter good for deburring as well as countersinking? Yes, the shearing geometry and HSS‑Co material enable clean deburring as well as accurate countersinking for assembly preparations. Manufacturer/Responsible: NORDWEST Handel AG, Robert‑Schuman‑Straße 17, 44263 Dortmund

Take advantage of the combination of HSS‑Co cutting quality, a 90° countersink angle and reliable through‑hole chip evacuation for burr‑free countersinking and deburring in a variety of metals; order the tool directly via Metav Werkzeuge or consult the Metav advisors for application guidance. TECWERK Through‑Hole Countersink 10–15 mm, 90° (HSS‑Co) The TECWERK through‑hole countersink designed for precise, burr‑free chamfering and deburring in steel, cast iron and non‑ferrous alloys HSS‑Co cutting material 90° countersink angle for exact chamfers Through‑hole chip evacuation prevents jamming 10 mm cylindrical shank, 65 mm overall length Precise chamfering that reduces rework and scrap The through‑hole countersink is engineered for dependable removal of burrs and for creating accurate chamfers. Manufactured from HSS‑Co, the tool delivers a shearing cut that tends to leave a cleaner edge than interrupted or blunt cutting geometries; this results in reduced rework and fewer rejected parts in serial and one‑off operations. Where a defined 90° chamfer is required, the consistent geometry helps maintain dimensional conformity across batches, improving process reliability and traceability. Controlled chip flow for smooth operation and surface finish Chip management is a central design advantage: the through‑hole chip evacuation channels swarf away from the cutting zone, which prevents chips from being trapped between the tool and the workpiece. This mechanism lowers the risk of chatter and radial marks, enabling a smoother finish. For steel applications up to 500 N the recommended feed is 0.14 mm/rev, and the tool achieves its best results at low cutting speed; the controlled parameters combine to produce burr‑free edges and stable cutting conditions useful in both manual and CNC countersinking operations. Robust shank and wide application range for workshop reliability A 10 mm cylindrical shank and a 65 mm overall length make the countersink compatible with standard collets and chuck systems in typical workshop equipment. The HSS‑Co substrate provides good toughness for mixed machining tasks, and the geometry is suitable for steel, cast iron, as well as brass and other light non‑ferrous metals — delivering consistent deburring and countersinking where surface integrity matters. The tool's construction supports dependable performance in industrial and trade environments, reducing tool change frequency and contributing to smooth production flow. Choose the TECWERK countersink for consistent, burr‑free results — contact Metav Werkzeuge in Emmerich for ordering and technical advice via info@metav-werkzeuge.com or by phone at +49 2822 7131930 Technical data Article number: 2000865148NW Item name: Through‑hole countersink 10–15 mm, 90°, HSS‑Co TECWERK Packaging unit: 1 Core specifications Countersink angle: 90° Shank diameter: 10 mm Overall length: 65 mm Feed in steel (up to 500 N): 0.14 mm/rev Special features HSS‑Co cutting material Cylindrical shank Shearing cut for cleaner edges Through‑hole chip evacuation to prevent jamming Suitable for steel, cast iron, brass and light non‑ferrous metals Best results at low cutting speed FAQ Which materials are suitable for this countersink? The TECWERK through‑hole countersink is suitable for steel, cast iron, brass and other light non‑ferrous metals, offering burr‑free results across these materials. What feed and cutting conditions are recommended for steel? For steel applications up to 500 N a feed of 0.14 mm/rev is recommended; the tool performs best at low cutting speed to reduce burr formation and improve finish. How does the through‑hole design improve performance? The through‑hole chip evacuation prevents swarf becoming trapped between the tool and workpiece, which reduces the risk of jamming, chatter and poor surface finish when countersinking. What are the main dimensions for machine setup? The countersink features a 10 mm cylindrical shank and a 65 mm overall length, compatible with common collets and chucks. Manufacturer / Responsible: NORDWEST Handel AG, Robert‑Schuman‑Straße 17, 44263 Dortmund

Take advantage of HSS‑Co robustness and a 90° countersink angle for consistently clean, chatter‑free deburring; the set’s oblique chip ejection preserves the cutting edge and keeps production running smoothly. Order the TECWERK set directly via Metav Werkzeuge or consult our team for application advice. TECWERK Cross‑Hole Countersink Set – HSS‑Co, 90° Countersinks, Cylindrical Shank A TECWERK cross‑hole countersink set designed for efficient, chatter‑free deburring of drilled holes in long‑chipping, soft materials HSS‑Co cutting material for extended life 90° countersink for standard chamfers Oblique chip ejection prevents tool damage Supplied in a robust plastic case High‑performance deburring for reliable production The set combines HSS‑Co cutting material with a 90° countersink geometry to deliver a shearing action that reduces vibration and tool chatter. This results in faster, more consistent deburring and cleaner chamfers after drilling. The cylindrical shank enables secure clamping in standard toolholders, while the optimised cutting geometry produces short, predictable results that simplify downstream assembly and finishing. The design focuses on measurable performance: improved surface finish and reduced rework time. Chip evacuation that protects the countersink and workpiece An oblique through‑hole in each countersink channels swarf away from the cutting faces toward the shank, so chips cannot rebound and damage the tool. This chip ejection method maintains cutting integrity during repeated use and reduces the risk of fretting or scratching the chamfer edge. Particularly suited to soft, long‑chipping materials, the set is effective on typical workshop metals that produce continuous chips, ensuring dependable evacuation and longer tool life. Practical set‑up and storage for workshop efficiency Delivered as a compact, 4‑piece set in a protective plastic case, the tools are organised for quick selection and safe storage. The case keeps the countersinks protected during transport and on the bench, cutting downtime for searches or accidental damage. The combination of durable cutting material and clear storage reduces tool consumption and supports a lean workshop routine, making the set a pragmatic choice for production environments and trade workshops seeking dependable tooling without complex maintenance. For application-specific guidance or to purchase the TECWERK cross‑hole countersink set, contact Metav Werkzeuge in Emmerich for expert advice and fast supply via info@metav-werkzeuge.com or +49 2822 7131930 Technical Data Article number: 2000865500NW Manufacturer: TECWERK Content: 4 pieces Packaging: Plastic case Facts Countersink angle: 90° Cutting material: HSS‑Co Special features Cylindrical shank Oblique through‑hole for chip ejection Shearing cut via optimised cutting geometry Suitable for soft, long‑chipping materials Designed for light, chatter‑free deburring FAQ What materials are best suited to these countersinks? The TECWERK cross‑hole countersink set is particularly suited to soft, long‑chipping materials, where the oblique chip ejection keeps swarf clear and the HSS‑Co edges perform reliably. How many pieces are included in the set and how are they supplied? The delivery contains four countersinks supplied in a plastic case for secure storage and easy selection. Why does the countersink have an oblique hole? The oblique through‑hole directs chips towards the shank so that expelled swarf cannot damage the cutting edges, ensuring longer tool life and consistent chamfer quality. Is the 90° angle suitable for common chamfering tasks? Yes, the 90° countersink angle provides a standard chamfer profile commonly required for deburring and preparing holes for fasteners. Can these countersinks be used in handheld drills? The tools have a cylindrical shank suitable for standard chucks and holders; secure clamping is recommended for safe, chatter‑free operation. Manufacturer/Responsible: NORDWEST Handel AG, Robert‑Schuman‑Straße 17, 44263 Dortmund

Take advantage of a robust combination of HSS‑Co cutting material, a precise 90° countersink angle and effective chip evacuation for quieter, burr‑free chamfering; order via Metav Werkzeuge or consult our team for application advice. Through‑hole countersink 15–20 mm 90° HSS‑Co TECWERK A through‑hole countersink 15–20 mm 90° HSS‑Co designed for burr‑free chamfering and deburring across steel, cast iron and non‑ferrous metals HSS‑Co cutting material 90° countersink angle Cylindrical shank Ø12 mm Chip evacuation through the hole Reliable, burr‑free chamfering for mixed materials The countersink is manufactured from HSS‑Co, a high‑performance cobalt high‑speed steel that sustains cutting edges under heat and stress; this results in consistent chamfer quality when working with steel, cast iron and non‑ferrous alloys. The tool’s 90° countersink angle produces clean, standard chamfers suitable for fastener seating and visual finishing, while the described shearing cut reduces the formation of burrs and minimises secondary operations. For production settings, this translates into fewer rejects and lower rework rates. Designed to prevent clogging and machining chatter A distinctive feature is the through‑hole design that channels chips through the drilled hole, avoiding accumulation at the cutting edge and preventing the tool from jamming against the workpiece. This effective chip evacuation reduces the risk of chatter and irregular finishes, delivering smoother deburring cycles even at interrupted cuts. The tool is described as offering best results at low cutting speed, which stabilises process forces and further improves surface finish and repeatability. Precision dimensions for consistent tool handling The countersink comes with a cylindrical shank of 12 mm and an overall length of 85 mm, providing secure clamping in standard chucks and holders for repeatable concentricity. A recommended feed in steel up to 500 N of 0.16 mm per rev helps to achieve the intended cutting action and surface quality; adherence to this parameter supports long tool life and predictable machining results. The combination of these dimensional specifics and the material choice makes the cutter suitable for both workshop maintenance and light production tasks. For burr‑free, dependable chamfering choose the TECWERK through‑hole countersink and contact Metav Werkzeuge for application guidance or a tailored quotation. Technical data Article number: 2000865149NW Manufacturer: TECWERK Packaging unit: 1 Core technical data Countersink diameter: 15–20 mm Countersink angle: 90° Shank diameter: 12 mm Overall length: 85 mm Recommended feed in steel (≤500 N): 0.16 mm/rev Special features Cutting material: HSS‑Co Cylindrical shank Through‑hole chip evacuation prevents clogging Shearing cutting action for burr‑free results Best results at low cutting speed Suitable for steel, cast iron, non‑ferrous and light metals FAQ Which materials can be machined with this countersink? The TECWERK through‑hole countersink is suitable for steel, cast iron and non‑ferrous or light metals, delivering clean chamfers and effective deburring across these substrates. How does the through‑hole design improve machining? The through‑hole enables chip evacuation through the drilled hole, preventing chips from jamming at the cutting edge and reducing chatter and burr formation during countersinking. What are the relevant dimensions for tool clamping? The tool features a 12 mm cylindrical shank and an overall length of 85 mm, compatible with standard chucks and holders for reliable concentricity. What feed and speed settings are recommended? Best results are achieved at low cutting speed with a recommended feed in steel up to 500 N of 0.16 mm per rev, which supports the intended shearing action and prolongs tool life. Is this countersink suitable for production use? Yes; the combination of HSS‑Co material, through‑hole chip evacuation and standardised geometry makes it appropriate for both workshop maintenance and light production environments. Manufacturer/Responsible: NORDWEST Handel AG, Robert‑Schuman‑Straße 17, 44263 Dortmund

Take advantage of a HSS‑Co cutting geometry and a 90° countersink angle to achieve burr‑free chamfers with reliable chip evacuation; the cylindrical 6 mm shank and 45 mm overall length ensure secure clamping and controlled feed. Order directly via Metav Werkzeuge or consult our specialists for application advice. TECWERK Cross‑Hole Countersink 2–5 mm, 90° HSS‑Co The TECWERK Cross‑Hole Countersink 2–5 mm is a precision 90° countersink with a cylindrical shank, designed for burr‑free chamfering and deburring across a range of ferrous and non‑ferrous materials HSS‑Co cutting material for long life 90° geometry for standard chamfering Cylindrical 6 mm shank for secure clamping Reliable, burr‑free chamfering for production environments The combination of HSS‑Co cutting material and a 90° tip angle delivers consistent chamfer quality and extended tool life. The tool’s peeling cut action shears rather than tears the material, which reduces burr formation and minimises the need for secondary deburring operations. Built with a chip evacuation path through the drill hole, the design prevents chips from jamming against the workpiece, ensuring steady performance even in interrupted cuts. With a 6 mm shank and 45 mm overall length, the countersink fits standard holders and maintains concentricity for accurate, repeatable chamfers. Recommended feed in steel (up to 500 N) is 0.07 mm/rev, which balances surface finish and tool longevity. Versatile use across common workshop materials with lower cutting speeds Engineered for use on steel, cast iron and non‑ferrous metals, this countersink is suitable for routine chamfering and light deburring tasks in both maintenance and production settings. Best results are achieved at low cutting speed, where the HSS‑Co grade retains hardness and resists thermal softening. The tool’s geometry is optimised for light to medium feeds and produces clean, chatter‑free chamfers that improve assembly fit and reduce inspection rework. For operations where surface quality and edge control matter, the controlled shearing action contributes directly to process efficiency and reduced downstream labour costs. Simple integration, dependable handling and predictable results Designed for straightforward integration into existing tool setups, the countersink’s 6 mm shank provides stable clamping and reduced runout in compatible chucks and collets. The compact overall length keeps the centre of gravity close to the holder for improved stability, important in serial production and automated setups. Constructed from HSS‑Co, the tool resists wear in abrasive conditions and offers a predictable tool life when operated within the recommended speed and feed window. Regular cleaning of the hole for chip escape and adherence to the specified feed rate maintain performance and help protect component edges, offering long‑term savings through fewer rejects and less rework. For technical advice or to purchase the TECWERK cross‑hole countersink directly from our Emmerich stock, contact Metav Werkzeuge by email at info@metav-werkzeuge.com or by phone on +49 2822 7131930 — our specialists will advise on suitability for specific materials and applications Technical Data Article number: 2000865146NW Label: Querlochsenker 2-5mm 90Grad HSS-Co TECWERK Manufacturer: TECWERK Packaging unit: 1 Dimensions & core data Countersink angle: 90° Shank diameter: 6 mm Overall length: 45 mm Feed in steel (≤500 N): 0.07 mm/rev Materials & special features Cutting material: HSS‑Co Peeling/shearing cut Chip evacuation through the drill hole prevents clogging Suitable for steel, cast iron, non‑ferrous and light metals Best results at low cutting speeds FAQ What size hole range is this countersink intended for? The TECWERK cross‑hole countersink is specified for holes in the 2–5 mm range and is designed to produce clean 90° chamfers in that diameter band. Can this countersink be used on hardened steel? This countersink is made from HSS‑Co and is optimised for steels, cast iron and non‑ferrous metals; for hardened steels above the tool’s recommended hardness, a specialist indexable or coated solution should be considered. How does the chip evacuation feature help in practice? Chip evacuation through the cross hole prevents chips from jamming between tool and workpiece, which keeps the cutting edge clear and helps achieve the burr‑reduced chamfers described in the technical data. What feed and speed settings are recommended for steel? For steel up to 500 N the recommended feed is 0.07 mm/rev; pair this feed with a low cutting speed to maintain tool life and surface quality with the HSS‑Co grade. TECWERK: Manufacturer / Responsible: NORDWEST Handel AG, Robert‑Schuman‑Straße 17, 44263 Dortmund

Benefit from a cobalt HSS cutting material combined with a 90° countersink geometry and secure 12 mm shank to achieve consistent, burr‑free chamfers. The integrated chip evacuation through the through‑hole reduces clogging and downtime; order the Cross‑hole countersink directly via Metav Werkzeuge or consult our specialists for machining advice. Cross‑hole countersink 20–25 mm, 90° – HSS‑Co, TECWERK The Cross‑hole countersink 20–25 mm, 90° HSS‑Co is a cylindrical‑shank countersink engineered for burr‑free countersinking and reliable deburring across steel, cast iron and non‑ferrous alloys Cobalt HSS construction for long tool life 90° countersink angle for standard chamfers 12 mm cylindrical shank for stable clamping Chip evacuation via hole prevents clogging Consistent burr‑free chamfers even on demanding materials The cobalt high‑speed steel construction delivers a shearing cut that produces clean edges with minimal burring. The 90° geometry yields standard chamfers suitable for fastening preparations and aesthetic finishing alike, while the tool’s material selection balances wear resistance with toughness. This combination reduces the need for secondary manual finishing and supports stable, repeatable edge quality across mixed production runs. Predictable chip control for steady machining cycles Thanks to the through‑hole design, chip evacuation is guided away from the work interface, which prevents chips from jamming between tool and component. In practice this lowers the risk of chatter and surface marks and contributes to uninterrupted process flow. The tool delivers recommended performance at a feed of 0.2 mm/rev under cutting forces up to 500 N, making it suited to controlled, low‑speed countersinking strategies that favour surface integrity. Secure mounting and compact overall length for better handling A 12 mm shank provides a compact and robust clamping interface, promoting concentric stability during rotation and reducing run‑out at the holder. The 102 mm overall length gives a practical balance between accessibility in deeper set‑ups and rigidity for precision work. The cylindrical shank geometry supports consistent concentricity, which is beneficial where precise alignment and repeatability are required. Clear application profile and recommended machining approach Designed for burr‑free countersinking and deburring of steel, cast iron, and light non‑ferrous metals such as brass and aluminium, the tool performs best at lower cutting speeds where the HSS‑Co grade exhibits optimal toughness. A shearing‑type flute geometry aids chip formation, so operators should prioritise steady feeds and monitor cutting conditions to extend tool life and secure consistent edge quality. For reliable, burr‑free countersinking in mixed metals, choose the TECWERK cobalt HSS cross‑hole countersink and contact Metav Werkzeuge for tailored machining recommendations via info@metav-werkzeuge.com or call +49 2822 7131930 Technical data Article number: 2000865150NW Designation: Cross‑hole countersink 20–25 mm 90° HSS‑Co TECWERK Manufacturer: TECWERK Package unit: 1 Facts Countersink diameter: 20–25 mm Countersink angle: 90° Shank diameter: 12 mm Overall length: 102 mm Recommended feed in steel up to 500 N: 0.2 mm/rev Special features Cutting material: HSS‑Co Cylindrical shank Shearing‑type cut for clean edges Chip evacuation through the through‑hole prevents chip clogging Ideal for deburring and chatter‑free countersinking in steel, cast iron and non‑ferrous/light metals Best results at low cutting speed FAQ What materials can be machined with this countersink? The cross‑hole countersink is suited to steel, cast iron and non‑ferrous/light metals, providing burr‑free countersinking and effective deburring in these materials. What makes the chip evacuation effective? The tool’s through‑hole guides chips away from the cutting zone; this chip evacuation reduces clogging and helps maintain a stable surface finish during countersinking. What shank size does the tool have? The countersink features a 12 mm shank, which offers a stable clamping interface for improved concentricity and reduced run‑out. Which feed and cutting force are recommended? For steel, the data indicates a feed of 0.2 mm/rev at cutting forces up to 500 N to obtain the best surface results and tool life. Is the cutting material suitable for demanding operations? Yes, the HSS‑Co grade combines hardness and toughness, making the countersink appropriate for controlled, low‑speed machining where a shearing action is preferred. Manufacturer / Responsible: NORDWEST Handel AG, Robert‑Schuman‑Straße 17, 44263 Dortmund

Take advantage of a robust HSS‑Co cutting body and a 90° geometry for consistent, burr‑free results, combined with secure mounting via an 8 mm cylindrical shank to keep production steady. Order the tool directly via Metav Werkzeuge or consult our specialists for specification matching. Through‑hole countersink 5–10 mm, 90° HSS‑Co – TECWERK The through‑hole countersink 5–10 mm is a purpose‑built tool for burr‑free countersinking and precise deburring in steel, castings and non‑ferrous metals, engineered for low cutting speeds and reliable chip control. HSS‑Co cutting material for extended tool life 90° countersink angle for standard fastener seating 8 mm cylindrical shank for secure clamping Chip evacuation through the drill hole prevents clogging Consistent results across common workshop materials The cobalt high‑speed steel construction (HSS‑Co) gives the countersink a durable cutting edge that tolerates intermittent heat better than standard high‑speed steels. This material choice translates into fewer tool changes and more predictable component quality when working with steel, cast iron and non‑ferrous metals. The 90° geometry ensures standardised seating for screws and fasteners, while the shearing cutting action reduces the tendency to tear material fibres, producing a clean, burr‑free edge that often removes the need for secondary finishing. Design elements that reduce downtime and improve surface finish A key functional advantage is the integrated chip ejection: chips are routed through the existing drill hole, which significantly reduces the risk of chip jamming at the workpiece and prevents scoring of the countersunk surface. Combined with the tool’s deliberate shearing action, this design supports rattle‑free and low‑vibration operation, delivering consistently smooth edges. For operations where surface quality matters, such as assembly parts or visible fittings, the controlled chip flow and 90° seating geometry contribute directly to fewer rejects and less rework. Practical dimensions and process guidance for reliable operation The tool features an 8 mm shank diameter and an overall length of 48 mm, providing a compact form that suits common toolholders and drill chucks. Recommended feed performance in steel up to 500 N is around 0.09 mm per revolution, and the tool achieves its best results at lower cutting speeds, which helps manage thermal load and extend life. The cylindrical shank enables stable clamping and repeatable concentricity, while the modest overall length aids access in confined setups. These specifications support efficient integration into both manual and CNC workflows, balancing durability with straightforward handling. Contact Metav Werkzeuge in Emmerich for tailored technical advice or to arrange supply of this TECWERK through‑hole countersink — email info@metav-werkzeuge.com or call +49 2822 7131930 Technical data Article number: 2000865147NW Product name: Through‑hole countersink 5–10 mm 90° HSS‑Co TECWERK Packaging unit: 1 UID: 2000865147NW Facts Diameter range: 5–10 mm Countersink angle: 90° Shank diameter: 8 mm Overall length: 48 mm Recommended feed in steel up to 500 N: 0.09 mm/rev Special features Cutting material: HSS‑Co (cobalt high‑speed steel) Shearing cutting action for low burr formation Chip evacuation through the drill hole to prevent clogging Ideal for burr‑ and rattle‑free countersinking and deburring Best results at lower cutting speeds Cylindrical shank for secure toolholding FAQ What materials is this countersink suitable for? The TECWERK through‑hole countersink is suitable for steel, cast iron, and non‑ferrous and light metals, offering clean deburring and reliable seating across these materials. What is the recommended feed rate for steel? For steel applications up to 500 N, a feed of approximately 0.09 mm per revolution is recommended to balance surface finish and tool life. How does the tool prevent chip clogging? Chip evacuation is achieved through the drill hole so that swarf is expelled away from the workpiece, reducing the risk of clogging and surface damage during countersinking. Which shank size is required for mounting? The tool has an 8 mm cylindrical shank, compatible with standard collets and chucks that accept an 8 mm diameter. Is the 90° angle suitable for standard fasteners? Yes, the 90° geometry is designed for standard fastener seating and ensures consistent, flush countersinks for many common screw and bolt heads. Manufacturer/Responsible: NORDWEST Handel AG, Robert‑Schuman‑Straße 17, 44263 Dortmund