M4 x 0.7mm Machine Tap DIN 371C HSS-Co 6H For Blind Holes, Right-Hand 40° Flank Relief - TECWERK

Take advantage of the combination of robust HSS‑Co construction, precise DIN 371C Form C geometry and a secure shank Ø 4.5 mm for dependable thread production in blind holes; order through Metav Werkzeuge or consult our specialists for application advice.

TECWERK machine tap DIN 371C M4 x 0.7 HSS‑Co, right‑hand spiral 40°

The TECWERK machine tap DIN 371C M4 x 0.7 is a Form C, cobalt-alloy HSS tool engineered for producing metric ISO blind threads in steels up to approx. 900 N/mm², suitable for machine tapping applications

• HSS‑Co for enhanced heat and wear resistance
• Right‑hand spiral 40° for reliable chip evacuation
• Metric ISO thread M4 x 0.7 with tolerance 6H
• Shank Ø 4.5 mm for secure machine mounting

Increased cutting life through cobalt high‑speed steel

The tool is made from HSS‑Co, a cobalt-alloy high‑speed steel that improves hardness at elevated temperatures and extends tool life under heavy use. This material choice translates into fewer tool changes and lower downtime in production environments. For machine shops working with medium‑to‑high strength materials, the material composition delivers consistent performance when producing metric ISO threads in components subject to repeated manufacture.

Clean thread formation in blind holes with spiral geometry

Designed as DIN 371C Form C, the tap features a right‑hand spiral 40° which actively directs chips back out of the hole when forming threads in blind holes. The flanks are relieved to reduce friction and to promote smooth chip flow, improving thread quality and reducing the risk of chip jamming. The integrated tolerance 6H provides a predictable internal thread fit that aligns with ISO specifications, making the result compatible with standard fasteners and assemblies.

Machine compatibility and reliable mounting for industrial use

With a shank Ø 4.5 mm, this machine tap offers secure clamping in common holders and collets, supporting stable concentricity during tapping cycles. The design suits automated and semi‑automated machines where repeatability and positional accuracy are required. Combined with its geometry and material, the tool is engineered for efficient series production, contributing to reproducible thread quality and lower per‑part tooling costs.

Contact Metav Werkzeuge for tailored advice on integrating the TECWERK M4 x 0.7 machine tap into existing workflows; technical queries and order support are available via info@metav-werkzeuge.com or by telephone on +49 2822 7131930

Technical data

• Article number: 2000867264NW
• Label: Maschinengewindebohrer DIN 371C M4x0,7mm HSS‑Co 6H TECWERK
• SKU: 2000867264NW

Facts

• Thread size: M4 x 0.7
• Shank diameter: Ø 4.5 mm
• Suitable material tensile strength: up to approx. 900 N/mm²
• Spiral direction/angle: Right‑hand spiral 40°
• Tolerance class: ISO2 (6H)

Special features

• Material: HSS‑Co (cobalt high‑speed steel)
• Geometry: DIN 371C, Form C
• Application: for blind holes (sacklochgewinde)
• Flank treatment: flanks relieved for improved chip control

FAQ

What materials can be machined with this tap?
The TECWERK machine tap is specified for steels with tensile strength up to approx. 900 N/mm²; its HSS‑Co composition is chosen for durability when machining these materials.

Is this tap suitable for blind holes?
Yes, the tool is designed specifically for blind holes; the right‑hand spiral 40° promotes reliable chip evacuation and reduces clogging.

What tolerance and thread fit does the tap produce?
The tap produces metric ISO threads to DIN 13 / ISO2 (6H) tolerance, providing a standard internal thread fit for general engineering applications.

How should the tap be mounted in the machine?
Use a suitable collet or holder that accepts a shank Ø 4.5 mm to ensure concentric clamping and stable operation during tapping cycles.

Does the geometry reduce the risk of chip breakage or jamming?
The Form C geometry with relieved flanks and the 40° spiral are engineered to manage chips effectively, lowering the likelihood of jamming in blind holes.

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