M12 Countersink DIN 373 HSS 3-Flute 180° For Steel And Cast Iron, Medium Grade - TECWERK

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