M4x0.7mm Machine Tap DIN 371B Form B HSS-Co Vaporised ISO2 6H Straight Flute - TECWERK

Take advantage of the combination of durable HSS‑Co construction, a peel chamfer optimised for through‑holes and consistent ISO2 (6H) tolerance for reliable mating threads; order the machine tap directly via Metav Werkzeuge or ask our consultants if needed.

Machine tap DIN 371B Univ. M4×0.7 HSS‑Co – straight flute, vapourised (TECWERK)

The Machine tap DIN 371B Univ. M4×0.7 HSS‑Co is a universal metric tap designed for efficient production tapping of through‑holes in a range of metals.

• HSS‑Co material for enhanced wear resistance
• Straight flutes for consistent chip evacuation
• Ground flanks with peel chamfer for through‑holes
• Metric ISO thread with ISO2 (6H) tolerance

Durable alloy and precision tolerance for consistent threads

Made from HSS‑Co (cobalt‑alloy high‑speed steel) and vapourised for surface resilience, this machine tap delivers increased hardness and thermal stability compared with standard high‑speed steels. The ISO2 (6H) tolerance ensures precise fit with standard metric nuts and bolts, reducing rework and improving assembly reliability. The combination of a robust cutting material and tight tolerance is particularly valuable where repeatable, high‑quality threads are required in series production.

Optimised geometry for through‑hole tapping and reliable chip control

The straight flute design, together with the peel chamfer (Schälanschnitt), has been developed for smooth performance in through‑holes, facilitating effective chip formation and evacuation. The honed flanks (flank grinding) improve cutting engagement and reduce work hardening on stainless steels, while the universal Form B geometry provides a balance between cutting aggressiveness and tool life. These features translate into fewer broken taps and a lower scrap rate when working with steels, stainless steels, spheroidal graphite cast iron and non‑ferrous metals.

Practical handling and machine compatibility to reduce downtime

With a shank Ø 4.5 mm, the tap fits common collets and tapping holders used in workshop and production machines, enabling quick tool changes and stable clamping. The green ring marking offers immediate visual identification on a busy tool trolley. As a DIN 371B machine tap prepared for ISO metric threads (DIN 13 Sheet 1), it integrates easily into established machining processes, helping to maintain cycle times and deliver consistent thread quality across batches.

For application advice or to secure TECWERK machine taps with HSS‑Co performance, contact Metav Werkzeuge in Emmerich for availability and tailored recommendations

Technical data

• Article number: 2000867679NW
• Designation: Machine tap DIN 371B Univ. M4×0.7 HSS‑Co vapourised 6H TECWERK
• Manufacturer: TECWERK
• Packaging unit: 1

Facts

• Thread size: M4 × 0.7 mm
• Tolerance: ISO2 (6H)
• Shank diameter: 4.5 mm

Special features

• HSS‑Co material
• Form B, Type UNIVERSAL
• Vapourised coating
• Green ring identification
• Straight flutes (straight‑nutted)
• Ground flanks (flank honing)
• Peel chamfer for through‑holes
• Metric ISO thread according to DIN 13 Sheet 1
• Suitable for steel, stainless steel, spheroidal graphite cast iron and non‑ferrous metals

FAQ

What does HSS‑Co mean and why is it relevant?
HSS‑Co denotes high‑speed steel with cobalt content; the cobalt increases heat resistance and hardness so the tap maintains cutting performance longer, which is especially useful when the TECWERK machine tap works in tougher materials.

Is this tap suitable for stainless steel?
Yes, the TECWERK machine tap is specified for stainless steels; the honed flanks and HSS‑Co composition reduce work hardening and improve chip formation in stainless applications.

What is the purpose of the peel chamfer?
The peel chamfer is designed to ease chip flow and reduce thread start pressure for through‑hole tapping, improving thread quality and lowering the risk of tap breakage in continuous production.

Can this tap be used in a standard collet or chuck?
The tap has a shank Ø 4.5 mm, compatible with common collets and tapping holders, allowing secure clamping in most machine setups.

What does ISO2 (6H) tolerance imply for mating parts?
ISO2 (6H) is a common tolerance class for internal threads; it ensures the thread created by this tap will reliably mate with standard metric external threads specified to the same tolerance class.

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