3mm Machine Tap DIN 371C HSS-Co Form C 6H For Blind Holes, 3.5mm Shank - TECWERK

Take advantage of the combination of HSS‑Co construction, a 40° right‑hand spiral and ISO2 (6H) tolerance to achieve consistent, high‑quality metric threads in blind holes; order directly via Metav Werkzeuge or consult our specialists for application guidance.

Machine tap DIN 371C M3 x 0.5 HSS‑Co (Form C) – TECWERK

The Machine tap DIN 371C M3 x 0.5 HSS‑Co is a precision cutting tool for creating metric ISO threads in blind holes, designed for use in medium‑strength steels and machining centres.

• HSS‑Co construction for high wear resistance
• Right‑hand spiral 40° for blind‑hole chip control
• Metric ISO M3 x 0.5, DIN 371C, ISO2 (6H)
• Shank Ø 3.5 mm for secure clamping

Reliable metric threads for repeatable assembly quality

This machine tap delivers predictable thread form for small‑diameter metric applications. Built to DIN 371C standards, the tool produces an M3 x 0.5 thread with an ISO2 (6H) tolerance, ensuring interchangeability and correct fit in production and repair work. The standardised geometry reduces rework and inspection time by delivering threads that meet common specification limits; for less experienced operators, the DIN reference provides a clear benchmark for quality and acceptance.

Durability and cutting performance under load

Manufactured from HSS‑Co, the tap combines high hardness with improved red hardness for extended tool life in interrupted cuts and higher temperatures. The Form C geometry and relieved flanks reduce friction at the cutting edges, which lowers torque peaks and extends service intervals. When machining steels up to approximately 900 N/mm², the tool sustains sharpness longer than standard high‑speed taps, translating into fewer tool changes and more uptime on the machine.

Optimised chip control for blind‑hole threading

The 40° right‑hand spiral clears chips axially away from the cutting zone, a decisive advantage when producing blind‑hole threads. This spiral angle helps prevent chip packing and reduces the risk of thread damage in confined depths. For operators, this means fewer failed threads and less time spent on remedial operations; for production managers, it translates into a more consistent yield on batches that include small threaded features.

Machine integration and practical handling

A shank diameter of 3.5 mm provides secure clamping in standard collets and chuck systems used in tapping spindles and tapping heads. The simplified clamping geometry improves concentricity and reduces run‑out, which supports accurate thread pitch and surface finish. The tool’s construction suits both CNC machining centres and automated tapping heads where consistent alignment and repeatable results are required.

If there is any uncertainty about fitment, material suitability or machine setup, Metav Werkzeuge offers technical advice and data clarification; technical enquiries can be directed to info@metav-werkzeuge.com or by phone at +49 2822 7131930.

Contact Metav Werkzeuge for tailored advice on TECWERK machine taps or to arrange supply from our Emmerich distribution centre.

Technical data

• Article number: 2000867263NW
• Product: Maschinengewindebohrer DIN 371C M3x0,5mm HSS‑Co 6H TECWERK
• Manufacturer: TECWERK
• Packaging unit: 1

Facts

• Thread: M3 x 0.5
• Standard: DIN 371C
• Tolerance: ISO2 (6H)
• Shank diameter: 3.5 mm
• Helix angle: 40° right‑hand
• Suitable up to: ca. 900 N/mm² (steel)

Special features

• Material: HSS‑Co
• Form: C
• Flanks relieved
• For blind‑hole threading
• Metric ISO thread
• Designed for steel machining

FAQ

What materials can be machined with this tap?
The TECWERK machine tap (Machine tap DIN 371C M3 x 0.5 HSS‑Co) is specified for use in steels up to approximately 900 N/mm²; the HSS‑Co composition provides improved wear resistance in such materials.

Is this tap suitable for blind holes only?
While optimised for blind‑hole threading thanks to the 40° spiral, the tap can also be used in through holes where the spiral helix assists chip evacuation.

What does ISO2 (6H) tolerance mean for assembly?
An ISO2 (6H) tolerance indicates a standard internal thread tolerance class that ensures interchangeability and a controlled clearance when paired with standard bolts or screws.

How does the 40° right‑hand spiral help production?
The 40° helix moves chips away from the cutting edge and out of the hole, reducing chip packing in blind holes and lowering the risk of thread defects during automated or manual tapping.

What clamping requirements are recommended for this tool?
The tap has a shank Ø 3.5 mm to suit standard collets and tapping spindles; secure, concentric clamping is recommended to minimise run‑out and preserve thread quality.

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