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

Take advantage of the combination of HSS construction, a three‑cutting‑edge geometry and a 180° countersink angle to produce clean, burr‑free countersinks for M5 fastenings; order the tool directly via Metav Werkzeuge or contact the consultants for technical advice.

TECWERK Flachsenker DIN 373 M5 — HSS countersink, 3‑flute, 180°

The Flachsenker DIN 373 M5 is a high‑speed steel countersink designed for precise, burr‑reduced countersinking of M5 cylinder head screws, hex screws and nuts across steels and non‑ferrous alloys.

• HSS construction for long tool life
• Three cutting edges for smooth finish
• 180° countersink angle for M5 screws
• Cylinder shank with fixed pilot for guidance

Consistent, measurable performance for production use

The countersink delivers a clearly defined 180° geometry and a three‑flute cutting design that together promote stable cutting action and uniform chamfers. The use of HSS material gives a balanced hardness and toughness profile suited to general workshop and light industrial production. Specified feed in steel of 0.16 mm per revolution provides a concrete machining parameter that supports process planning and repeatable results, while the tool’s fine grade for through holes reduces chatter and eliminates common quality issues such as tool marks and uneven seating.

Material compatibility and application benefits

Engineered for universal workplace utility, the tool is optimised for burr‑free countersinking in steel, cast iron, and a range of non‑ferrous and light metals. The integrated fixed pilot on the cylinder shank maintains concentricity when creating countersinks for M5 fastenings, reducing rework and assembly issues. Operating at low cutting speeds yields the best surface finish and tool life; this guidance helps planners choose cutting parameters that balance throughput with component quality.

Practical advantages for workshop integration

The compact design with a cylinder shank ensures easy mounting in standard tool holders and hand‑held machines, while the three cutting edges reduce vibration compared with two‑flute variants. The DIN 373 specification simplifies ordering and tool inventory management by standardising angle and fitment for M5 applications. For maintenance and quality assurance, the robust HSS blank tolerates light sharpening and manual refurbishment, extending service life and lowering total tooling cost in long runs.

For burr‑free countersinking with TECWERK precision, contact Metav Werkzeuge for procurement and technical guidance at info@metav-werkzeuge.com or call +49 2822 7131930 — assistance from the Emmerich quality centre is available for specification matching and order support.

Technical data

• SKU: 2000865333NW
• Product label: Flachsenker DIN 373 M5 Güte fein f.DL HSS Z.3 TECWERK
• Manufacturer brand: TECWERK
• Packaging unit: 1
• Internal ID: 2000865333NW

Facts

• Countersink angle: 180°
• Cutting edges: 3
• Feed in steel (up to 500 N): 0.16 mm/rev
• Standard: DIN 373

Special features

• Material: HSS
• Shank type: cylinder shank with fixed pilot
• Application: countersinking for cylinder head screws, hex screws and nuts
• Suitable for: steel, cast iron, non‑ferrous and light metals
• Grade: fine for through holes
• Best results at: low cutting speed

FAQ

What is the recommended application for this countersink?
The TECWERK Flachsenker DIN 373 M5 is intended for producing clean countersinks for M5 cylinder head screws, hex screws and nuts, especially where burr‑free seating is required.

Which materials can be machined with this tool?
The countersink is suitable for steel, cast iron, and a variety of non‑ferrous and light metals; best surface finish is achieved at lower cutting speeds.

How many flutes does the tool have and why does that matter?
The tool features three cutting edges, which improve cutting stability and produce a smoother finish compared with two‑flute designs.

Is the tool compatible with standard tool holders?
Yes. The cylinder shank with fixed pilot allows straightforward mounting in conventional holders and supports accurate guidance during countersinking.

What feed rate should be used in steel?
A feed of 0.16 mm per revolution in steel (up to 500 N) is specified for consistent results and to reduce chatter.

Manufacturer/Responsible: NORDWEST Handel AG, Robert‑Schuman‑Straße 17, 44263 Dortmund