Take advantage of the combination of robust HSS construction, a precise 180° countersink angle and three cutting edges for burr-free seating in steel and cast iron; order directly via Metav Werkzeuge or consult the specialists for application advice. TECWERK Flat Countersink DIN 373 M6 – HSS, 180° countersink TECWERK Flat Countersink DIN 373 M6 is a precision countersink with cylindrical shank and fixed pilot pin, designed for clean chamfers for cylinder head screws, hexagon screws and nuts in steel, cast iron and non-ferrous metals HSS construction for long tool life DIN 373 standard compatibility 180° countersink angle for flush seating Three cutting edges for smooth finish Precise, burr-free chamfers for secure fastenings The HSS tool geometry and three cutting edges ensure consistent chip formation and a clean edge, producing burr-free countersinks that improve the seating of fasteners and reduce rework. The tool is intended for use after a pilot drill has produced the core hole; the specified quality grade for pilot holes guarantees accurate guidance. The result is repeatable seating depth and improved joint integrity, particularly where flush mounting is critical in assemblies. Reliable alignment and repeatable process security Equipped with a cylindrical shank and a fixed pilot pin, the design follows DIN 373, offering reliable alignment when countersinking for cylinder head and hexagon screws and nuts. This mechanical guidance reduces radial runout and vibration, which in turn lowers the risk of chatter marks and surface defects. The standardised form factor simplifies machine setup and replacement, delivering predictable results across batches without complex adjustment. Productive machining with clear operating parameters Best results are achieved at a low cutting speed, with an indicated feed of 0.2 mm/rev in steels up to 500 N, which balances tool life and surface quality. The countersink performs well on steel, cast iron and non-ferrous/light metals, producing smooth chamfers while limiting heat build-up thanks to the HSS substrate. Fewer passes and reduced deburring translate into shorter cycle times and lower downstream labour, making this countersink suitable for both workshop maintenance and small-series production. For a reliable countersinking solution with proven performance, contact Metav Werkzeuge to order the TECWERK Flat Countersink DIN 373 M6 (SKU 2000865348NW) or to receive tailored machining advice via info@metav-werkzeuge.com or +49 2822 7131930. Technical data Article number: 2000865348NW Designation: Flat countersink DIN 373 M6 Brand: TECWERK Packaging unit: 1 UID: 2000865348NW Core data Countersink angle: 180° Number of cutting edges: 3 Feed in steel up to 500 N: 0.2 mm/rev Shank: cylindrical with fixed pilot pin Materials & applications Material: HSS Applications: countersinking for cylinder head screws, hexagon screws and nuts Suitable for: steel, cast iron, non-ferrous and light metals Recommended: low cutting speed for best results FAQ What pilot hole is required for correct use? The countersink is intended for use after a matching pilot hole; follow the specified quality grade for the pilot hole to ensure the TECWERK Flat Countersink DIN 373 M6 runs true and produces clean chamfers. Which materials can be machined with this countersink? This HSS countersink performs well on steel, cast iron and non-ferrous/light metals, giving the best results at lower cutting speeds. What feed and cutting conditions are recommended for steels? For steels up to 500 N, a feed of 0.2 mm/rev is indicated; a reduced cutting speed helps preserve tool life and surface finish when countersinking. Is this tool compliant with recognised standards? Yes, the design conforms to DIN 373, providing a standardised geometry for consistent seating of cylinder head and hexagon screws as well as nuts. How does the pilot pin improve results? The fixed pilot pin centres the countersink in the pilot hole, reducing runout and vibration and therefore improving surface quality and repeatability during production. Manufacturer/Responsible: NORDWEST Handel AG, Robert-Schuman-Straße 17, 44263 Dortmund

Combining HSS cutting geometry, a 180° countersink angle and a secure cylindrical shank with fixed pilot pin, this tool delivers burr-free chamfers in steel, cast iron and non-ferrous metals while favouring low cutting speeds for best surface quality. Order the flat countersink directly via Metav Werkzeuge or request advice from our consultants. Flat countersink DIN 373 M8 (HSS, 180°, 3-flute) – TECWERK The Flat countersink DIN 373 M8 is a high-speed steel countersink designed for precise, burr-free chamfering of cylinder head screws, hex bolts and nuts in steels and light metals High-speed steel, three cutting edges 180° countersink angle for cylinder heads Cylindrical shank with fixed pilot pin Medium grade for through-hole applications Reliable geometry for consistent, burr-free chamfers The tool’s three cutting edges and optimised flute geometry deliver uniform chip removal, which results in a burr-free finish even in mixed-material production runs. Made from HSS, the cutter provides toughness and wear resistance that support stable operation in standard workshop conditions. The tool’s geometry is specified to DIN 373, ensuring compatibility with established countersinking practices and simplifying process planning in maintenance and small-batch manufacturing. Precise application range and machining guidance With a 180° countersink angle and an M8 nominal size, the cutter is intended for chamfers to accept cylinder head screws, hex screws and nuts; the fixed pilot pin and cylindrical shank guarantee concentric guidance through a through-hole. For steel up to the indicated strength, the recommended feed is 0.2 mm per revolution, and best results are achieved at lower cutting speeds, which reduces heat and promotes a clean edge without smearing or roll-over on softer metals. Operational advantages for workshop and production The medium-grade specification makes this countersink suitable for through-hole operations where a balance of tool life and cutting performance is required. The combination of HSS material and robust shank design reduces the frequency of rework and tool changes, supporting smoother production flow and predictable cycle times. When used in the recommended speed and feed window, the cutter lowers the risk of chatter and produces a consistent seating surface for fasteners. Practical considerations and compatibility This countersink excels in applications across steel, cast iron and a range of non-ferrous and light metals, including aluminium alloys, delivering clear advantages for workshop repair, component finishing and assembly preparation. The tool’s fixed pilot pin simplifies setup for through-holes, and conformity to DIN 373 facilitates integration with existing jigs and fixtures. For operations requiring higher cutting speeds or specialised coatings, consider matching tool grades and machining parameters to the component material. For specialist advice on application or to secure supply of TECWERK countersinks, contact Metav Werkzeuge by email at info@metav-werkzeuge.com or by phone on +49 2822 7131930 — our specialists in Emmerich will advise on suitability and delivery Technical Data Article number: 2000865342NW Label: Flachsenker DIN 373 M8 Güte mittel f.DL HSS Z.3 TECWERK Packaging unit: 1 Brand: TECWERK Core specifications Cutting edges: 3 Countersink angle: 180° Feed in steel up to 500 N: 0.2 mm/rev Size designation: M8 Grade: medium Materials & applications Material: HSS Cylindrical shank with fixed pilot pin For steel, cast iron, non-ferrous and light metals Best results at low cutting speeds Conforms to DIN 373 For countersinking cylinder head screws, hex bolts and nuts Medium grade for through-hole applications FAQ What materials can this countersink machine? The TECWERK flat countersink is suitable for steel, cast iron and a variety of non‑ferrous and light metals; its HSS construction supports general-purpose workshop use. Is the tool suitable for through-hole countersinking of M8 fasteners? Yes, the tool is specified for M8 through-hole applications and features a fixed pilot pin and cylindrical shank for concentric guidance. What cutting data is recommended for steel? For steel up to the indicated strength, the tool’s guidance specifies a feed of 0.2 mm per revolution and best surface quality at lower cutting speeds. How does the DIN 373 designation affect compatibility? DIN 373 conformity means the countersink’s geometry follows standardised dimensions and angles, facilitating integration with existing jigs, fixtures and process parameters. How many cutting edges does the cutter have and why does this matter? The cutter has three cutting edges, which promotes balanced chip removal and a smooth, burr‑reduced chamfer suitable for assembly seating. Manufacturer / Responsible: NORDWEST Handel AG, Robert-Schuman-Straße 17, 44263 Dortmund

Benefit from a combination of high-cutting precision, sturdy HSS construction and a fixed pilot pin that guarantees burr‑free, chatter‑reduced countersinks for a reliable assembly process — order the tool directly via Metav Werkzeuge or consult the technical team for tailor-made application advice. TECWERK Countersink DIN 373 M8 – HSS, 180° Angle, 3‑flute The TECWERK countersink DIN 373 M8 is a high‑speed steel countersinking tool designed to produce clean, burr‑free seats for fasteners in core holes across steel, cast iron and non‑ferrous materials. High‑speed steel construction for durability and precision 180° countersink angle for flat seating of screw heads Cylinder shank with fixed pilot pin for exact guidance Three cutting edges for smooth, burr‑free finishing Precision seating for secure assemblies The countersink is made from HSS (high‑speed steel) and conforms to DIN 373, ensuring the geometry suits standard core holes and common fastener types. Its 180° countersink angle provides a flat, even bearing surface for cylinder head screws and hexagon fasteners, which reduces stress concentrations at the screw head. Produced seats are burr‑reduced and consistent, which lowers the need for secondary deburring operations and improves assembly repeatability. For workshops aiming to reduce rework, this results in measurable time savings and improved joint reliability. Stable guidance and predictable cutting behaviour Equipped with a cylinder shank and a fixed pilot pin, the tool centres precisely in pre‑drilled core holes, preventing wobble and minimising surface irregularities. The design includes three cutting edges, which distribute cutting forces evenly for a cleaner finish and less vibration compared with two‑flute variants. For steel applications the recommended feed is 0.2 mm/rev at moderate cutting speeds; the tool achieves its best results when operated at lower surface speeds, which reduces thermal load and preserves the cutting edge life. The pilot pin also helps to maintain concentricity during rapid production runs, supporting consistent part quality. Versatile material compatibility and workshop advantages This countersink is suitable for use in steel and cast iron, as well as non‑ferrous and light metals, giving machining shops a single tool for a broad range of common tasks. The robust HSS material balances wear resistance with ease of resharpening when necessary, offering long service life without complex tooling investment. By producing clean, flat countersinks that match standard fastener geometries, the tool reduces assembly variation and facilitates faster inspection cycles. Integration into existing tool holders is straightforward due to the standard shank form, making it a practical addition for both manual and CNC workstations. Contact Metav Werkzeuge today to discuss application specifics and to secure the TECWERK HSS countersink for immediate integration into production; email info@metav-werkzeuge.com or call +49 2822 7131930 to arrange a technical consultation Technical data Article number: 2000865349NW Designation: Countersink DIN 373 M8 for core hole, HSS, 3 flutes, TECWERK Manufacturer: TECWERK Packaging unit: 1 Facts Cutting edges: 3 Countersink angle: 180° Feed in steel (up to 500 N): 0.2 mm/rev Standard: DIN 373 Special features HSS material Cylinder shank with fixed pilot pin Intended for cylinder head screws, hexagon screws and nuts Ideal for burr‑free and chatter‑free countersinking in steel and cast iron Suitable for non‑ferrous and light metals Best results at low cutting speed Grade suitable for core holes FAQ What materials can this countersink be used on? The TECWERK countersink is suitable for steel and cast iron, as well as non‑ferrous and light metals, providing versatile use across common workshop applications. Is the pilot pin removable and what does it do? The fixed pilot pin ensures stable centring in a core hole to prevent wobble and improve finish; its fixed design offers consistent guidance for repeatable countersinking. Which screw types does the tool support? The tool is designed to create seats for cylinder head screws, hexagon screws and nuts, with a 180° angle for flat seating compatible with DIN‑standard fasteners. What operating parameters deliver the best results? For steel up to the indicated cutting resistance, a feed rate of 0.2 mm per revolution and a lower cutting speed are recommended to reduce heat and prolong tool life. Can the tool be resharpened? Made from HSS, the countersink permits resharpening under proper workshop procedures, which helps extend service life and maintain cutting quality. Manufacturer/Responsible: NORDWEST Handel AG, Robert‑Schuman‑Straße 17, 44263 Dortmund