4mm Machine Tap DIN 371C VA M4x0.7 HSS-Co TiCN Coated ISO2 (6H) For Blind Holes, Shaft Ø 4.5mm - TECWERK

Take advantage of the combination of high cutting performance and reliable thread quality for faster, repeatable production results; order the tap directly via Metav Werkzeuge or consult our specialists for application-specific advice.

TECWERK M4 x 0.7 mm HSS‑Co machine tap DIN 371C, TiCN‑coated

A TECWERK M4 x 0.7 mm HSS‑Co machine tap DIN 371C engineered for producing metric ISO blind threads in stainless, acid‑ and heat‑resistant steels in workshop and production settings

• TiCN coating for extended tool life
• 40° spiral for efficient chip control in blind holes
• HSS‑Co for machining high‑strength steels
• ISO2 (6H) tolerance for precise thread fit

Consistent ISO threads reduce rework and assembly time

The tool follows DIN 371C for metric ISO threads and is manufactured to ISO2 (6H) tolerance, ensuring predictable thread geometry and repeatable assembly behaviour. Specifying a tap to this standard reduces trial-and-error during setup and minimises the need for secondary rework. For production runs where interchangeability and part compatibility matter, the adherence to recognised standards delivers measurable process reliability and shorter inspection cycles.

Coating and substrate for sustained cutting performance

Built from HSS‑Co (cobalt high‑speed steel) and finished with a TiCN coating, this tap offers improved wear resistance and reduced friction under demanding conditions. The combination of a cobalt alloy substrate and a hard titanium carbonitride layer helps maintain cutting geometry and surface quality when working with tough materials. The result is longer tool life, fewer tool changes and a steadier cost per thread over the production run when compared with uncoated high‑speed steel tools.

Optimised geometry for blind hole applications

Designed specifically for blind‑hole threading, the tool features a 40° spiral and flank ground geometry to aid chip formation and evacuation towards the entrance rather than into the bottom of the hole. This chip‑flow behaviour significantly lowers the risk of chip jamming and improves thread flank finish, which in turn reduces the probability of scrapped parts. The tap’s shank and flute design deliver reliable performance when producing internal threads that must be free of chips and burrs.

Practical dimensions and workshop integration

With a shank Ø 4.5 mm and compact form suited to standard tap holders, the tool integrates easily into existing setups and automated feeding systems. Its Form C / Type VA designation and blue ring identification simplify inventory management. Supplied as a single‑unit pack, the component is ready for immediate use and straightforward to store. For specific machine settings or coolants, Metav Werkzeuge’s technical resources can assist in matching cutting speeds and feeds to the material grade for optimal throughput.

For precise threaded components in stainless and heat‑resistant steels, contact Metav Werkzeuge to order this TECWERK machine tap or to request tailored application advice – eMail: info@metav-werkzeuge.com | Tel: +49 2822 7131930

Technical data

• Article number: 2000867775NW
• Item: Machine tap DIN 371C VA M4 x 0.7 mm HSS‑Co TiCN 6H TECWERK
• Manufacturer: TECWERK
• Packing unit: 1

Core specifications

• Thread size: M4 x 0.7 mm
• Shank diameter: 4.5 mm
• Helix angle: 40°
• Tolerance: ISO2 (6H)
• Tensile strength capability: up to 1000 N/mm²

Materials & special features

• Material: HSS‑Co (cobalt high‑speed steel)
• Coating: TiCN
• Type: VA; Form C; blue ring
• Application: blind hole threads
• Standard: DIN 13 Sheet 1
• Flank ground
• Right‑hand spiral; chip control for blind holes

FAQ

What materials can be machined with this tap?
The tap is intended for stainless, acid‑ and heat‑resistant steels and is specified for materials with tensile strength up to 1000 N/mm²; the TECWERK M4 x 0.7 mm tool performs reliably in these alloys.

Why is the 40° spiral important for blind holes?
The 40° helix directs chips away from the thread root in blind holes, reducing chip packing and improving surface finish; this geometry is a core feature of the TECWERK design for blind‑thread applications.

How does the TiCN coating benefit production?
The TiCN coating lowers friction and enhances wear resistance, extending tool life and enabling steadier cutting conditions compared with uncoated counterparts.

What does ISO2 (6H) tolerance mean for assembly?
ISO2 (6H) indicates a precise internal thread tolerance that supports consistent part interchangeability and reduces the need for post‑process adjustments.

Is the shank size suitable for standard holders?
The tool’s shank Ø 4.5 mm fits common tap holders and collets, allowing easy integration into existing machine setups.

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