150mm Countersink DIN 373 M12 Fine Grade HSS 3-Flute 180° With Pilot For Steel And Cast Iron - TECWERK

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