8mm Machine Thread Tap M8x1.25 HSS-Co Form C Vaporised ISO Metric 6H Blind Hole - TECWERK

Take advantage of a robust combination of precision and wear resistance for reliable blind‑thread production; the vapourised HSS‑Co substrate and ISO2 (6H) tolerance reduce rework and maintain thread accuracy over long runs. Order directly via Metav Werkzeuge or consult the specialists for specific application advice.

Machine tap DIN 371C – Universal M8×1.25 HSS‑Co (TECWERK) with vapourised coating and 40° right‑hand spiral

The Machine tap DIN 371C, Universal M8×1.25 HSS‑Co is designed for machining ISO metric blind threads in a wide range of engineering materials, offering a universal Form C geometry for general workshop and production use.

• HSS‑Co construction, vapourised surface
• Universal form C, right‑hand 40° spiral
• ISO metric M8×1.25, tolerance 6H
• For blind holes in steel, stainless and non‑ferrous

Consistent dimensional accuracy for production threads

The universal machine tap is engineered to produce M8×1.25 metric threads with the ISO2 (6H) tolerance, ensuring repeatable fits where interchangeability matters. Built to DIN 371C and referencing DIN 13 Blatt 1, the tool provides a measurable, standardised basis for quality control; this reduces the frequency of rework and scrap in medium‑volume production. The controlled tolerance and standard conformity make the tap suitable where assembly reliability and thread strength are critical.

Extended tool life through material choice and surface treatment

Manufactured from HSS‑Co (cobalt high‑speed steel) and finished with a vapourised coating, the tap combines toughness and hardness to resist abrasion and thermal stress. The vapourised surface improves wear resistance and helps preserve the cutting edge when machining tougher alloys such as stainless steel. A solid shank of 8 mm diameter provides stable clamping in machine holders, reducing chatter and prolonging service life. These material and finishing choices translate into longer intervals between tool changes and lower overall tooling costs.

Efficient chip evacuation and reliable blind‑hole performance

The right‑hand 40° spiral and Form C geometry are optimised for blind‑hole thread production: the spiral assists upward chip transport away from the cutting zone, while relief‑ground flanks decrease friction and facilitate smoother cutting. Designed specifically for blind holes, the combination of flute geometry and flank treatment reduces the risk of chip congestion and thread damage, enabling faster cycle times with consistent thread form. The tool is suitable for steel, stainless steels, spheroidal graphite cast iron and a range of non‑ferrous metals, offering practical versatility for general workshop and industrial applications.

Discuss specific machining requirements and availability with Metav Werkzeuge for tailored recommendations and assured supply from Emmerich – eMail info@metav-werkzeuge.com or call +49 2822 7131930

Technical data

• Article number: 2000867691NW
• Product label: Maschinengewindebohrer DIN 371C Univ.M8x1,25mm HSS‑Co vap.6H TECWERK
• Manufacturer: TECWERK
• Packaging unit: 1

Specifications

• Thread size: M8 × 1.25 mm
• Standard: DIN 371C; DIN 13 Blatt 1
• Tolerance: ISO2 (6H)
• Spiral direction/angle: right‑hand 40°
• Shank diameter: 8 mm

Materials & features

• Material: HSS‑Co (cobalt high‑speed steel)
• Coating: vapourised
• Form: Form C, universal
• Application: blind holes
• Suitable for: steel; stainless steel; spheroidal graphite cast iron; non‑ferrous metals
• Flank treatment: relief‑ground flanks

FAQ

What thread form and tolerance does this tap produce?
The tap produces an ISO metric M8×1.25 thread to ISO2 (6H) tolerance; the specification follows DIN 371C and DIN 13 Blatt 1 for reliable interchangeability.

Is this tool suitable for blind‑hole threading in stainless steel?
Yes. The Machine tap DIN 371C, Universal M8×1.25 HSS‑Co is designed for blind holes and is suitable for stainless steels thanks to the HSS‑Co material and vapourised surface finish.

How does the spiral angle affect chip control?
The right‑hand 40° spiral promotes upward chip evacuation from blind holes, reducing chip congestion and improving surface finish and thread quality.

What is the shank size and how should it be held in the machine?
The tool features an 8 mm shank diameter, intended for secure clamping in a compatible machine collet or tool holder to minimise run‑out and vibration.

For which materials beyond steel is the tap recommended?
The tap is suitable for spheroidal graphite cast iron and various non‑ferrous metals, providing a versatile choice for mixed‑material production runs.

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