M4x0.7mm Machine Tap DIN 371C VA HSS-Co Nitride Vaporised ISO2 (6H) For Blind Holes, 40° Right-Hand Helix - TECWERK

Take advantage of a high‑alloy HSS‑Co cutting core combined with a nitrided and vapourised surface for extended tool life and reliable tapping in tough stainless and heat‑resistant steels; order the tap directly via Metav Werkzeuge or consult our specialists for application advice.

Machine tap DIN 371C, Stainless steel M4 x 0.7, HSS‑Co, nitrided & vapourised (6H) — TECWERK

The machine tap DIN 371C M4 x 0.7 is a metric ISO cutting tool for producing precision threads in blind holes, optimised for high‑strength, corrosion‑resistant steels and engineered for machine tapping applications.

• HSS‑Co core for elevated cutting strength
• Nitrided and vapourised surface treatment
• Right‑hand spiral 40° for blind holes
• ISO‑6H tolerance for precise metric threads

Optimised alloy and surface treatment for demanding materials

The tap combines a HSS‑Co (cobalt high‑speed steel) core with a nitrided and vapourised finish to withstand the thermal and mechanical stresses encountered when machining tough alloys. Cobalt‑alloyed high‑speed steel increases red hardness and toughness, which translates into longer tool life and fewer broken taps when cutting stainless or heat‑resistant steels with tensile strength above 850 N/mm². The surface treatments reduce friction at the cutting edges, which lowers torque peaks and improves process stability in automated production.

Consistent thread quality and reliable chip control in blind holes

Designed to the DIN 371C profile and the metric ISO standard, the tool delivers threads with tolerance field ISO2 (6H) for repeatable assembly fit. The 40° right‑hand spiral evacuates chips away from the cutting zone, specifically reducing the risk of jamming in blind holes and so minimising scrap and rework. Flank relief grinding provides clean thread flanks and reduces thread pull‑out; the combination of geometry and treatment ensures the tap produces correct profiles without frequent tool changes, supporting steady cycle times in production.

Practical workshop integration and identification features

The tap’s Form C geometry and VA designation indicate suitability for stainless applications while the visible blue ring enables quick identification in tool drawers. A shaft diameter of 4.5 mm ensures compatibility with standard collets and tapping holders used in machining centres. These characteristics simplify tool handling and inventory management and help maintain throughput in small and medium workshops as well as larger production lines. For specification checks or if further technical data is required, Metav Werkzeuge’s technical team is available to advise on machine parameters and process recommendations.

Request availability and technical guidance from Metav Werkzeuge for TECWERK taps with HSS‑Co and nitrided/vapourised finish—contact Metav Werkzeuge at info@metav-werkzeuge.com or +49 2822 7131930 to discuss suitability for specific materials and machines

Technical Data

• Article number: 2000867274NW
• Designation: Machine tap DIN 371C, stainless steel M4 x 0.7, HSS‑Co, nitrided and vapourised, 6H, TECWERK

Facts

• Thread size: M4 x 0.7
• Shaft diameter: 4.5 mm
• Spiral angle: 40°
• Tolerance: ISO2 (6H)
• Applicable tensile strength: > 850 N/mm²
• Packaging unit: 1

Special features

• HSS‑Co material
• Form C geometry
• Type VA (stainless application)
• Nitrided and vapourised surface
• Blue ring identification
• Right‑hand spiral 40°
• Flank relief ground
• Metric ISO thread to DIN 13 sheet 1
• Suitable for blind holes
• Suited for corrosion‑, acid‑ and heat‑resistant steels

FAQ

What materials is this tap suitable for?
The TECWERK machine tap is intended for stainless, acid‑ and heat‑resistant steels with tensile strength above 850 N/mm², using its HSS‑Co alloy and surface treatment to resist wear.

Can this tap be used for blind holes on a CNC tapping head?
Yes, the right‑hand spiral 40° and the DIN 371C geometry are designed to facilitate chip evacuation in blind holes and suit CNC tapping heads and tapping holders.

What level of thread tolerance does the tap provide?
Threads produced by this tool conform to tolerance field ISO2 (6H) for metric ISO threads, ensuring consistent fit and assembly performance.

How is the tap identified quickly in a busy workshop?
The tool features a distinctive blue ring and the VA designation, aiding fast identification as a tap for stainless applications.

Is the shaft size standard for common collets?
The tap has a shaft diameter of 4.5 mm, which matches many standard collets and holders used in machine tapping operations.

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