150mm Countersink DIN 373 M4 HSS 3-Flute With Solid Pilot 180° Ideal For Steel And Castings - TECWERK

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