M8x1.25mm Machine Tap DIN 371B VA HSS-Co Nitride Vaporised ISO2 (6H) With Chamfered Relief, Straight Flute - TECWERK

Reliable M8×1.25 machine tapping with enhanced surface treatment and ISO2 (6H) tolerance ensures consistent, high-quality threads in high‑strength stainless and heat‑resistant steels; order TECWERK tools via Metav Werkzeuge or consult our specialists for technical guidance and fast supply from Emmerich.

Machine tap DIN 371B VA M8×1.25 HSS‑Co, nitrided & vapourised – TECWERK

The Machine tap DIN 371B VA M8×1.25 HSS‑Co is a straight‑flute metric tap designed for producing precise ISO threads in high‑strength and corrosion‑resistant steels for industrial machining applications

• HSS‑Co for high wear resistance
• Nitride and vapourised surface finish
• Straight flutes with chamfer for through holes
• ISO2 (6H) tolerance for precise threads

Consistent ISO threads in demanding materials

The combination of HSS‑Co substrate and a nitride and vapourised finish delivers repeatable thread form and long tool life when machining stainless, acid‑ and heat‑resistant steels with tensile strengths above 850 N/mm². The tool is produced to DIN 13 Blatt 1 standards and held to the ISO2 (6H) tolerance band, which reduces rework and ensures interchangeability with mating fasteners. This results in reliable thread quality across batch production runs.

Surface treatment and durability for extended service life

A hardened cobalt high‑speed steel core with a vapourised and nitrided surface enhances wear resistance and reduces friction at the cutting edges. The surface treatment also improves resistance to built‑up edge formation on sticky alloys, so fewer tool changes are required. For workshop managers seeking predictable maintenance intervals, the combination of substrate and finish means extended running times before reconditioning or replacement is necessary.

Efficient chip control and hole‑through tapping performance

The straight flutes and the integrated chamfer for through holes facilitate controlled chip formation and evacuation during through tapping operations. The design minimises the risk of chip accumulation in blind holes and supports stable cutting engagement, which is particularly important when working with tough, work‑hardening stainless grades. For process planners, this translates to fewer stoppages and enhanced cycle time predictability.

Simple integration with standard machining equipment

With a shaft diameter of 8 mm and the Form B, VA geometry, the cutter is compatible with common machine collets and holders used in production shops. Machinability data such as the metric thread size M8×1.25 and DIN compliance make programme setup straightforward for CAM and shopfloor teams. Clear marking (blue ring) aids rapid identification in tool cabinets and helps maintain an organised tooling inventory.

For secure, repeatable M8 threads in high‑strength stainless and heat‑resistant steels, select the TECWERK DIN 371B machine tap via Metav Werkzeuge — contact our Emmerich team for tailored advice and reliable supply from Metav Werkzeuge.

Technical data

• Article number: 2000867208NW
• Description: Machine tap DIN 371B VA M8×1.25 HSS‑Co, nitrided and vapourised
• Manufacturer: TECWERK
• Packing unit: 1

Core specifications

• Thread: M8×1.25
• Tolerance: ISO2 (6H)
• Shaft diameter: 8 mm
• Standard: DIN 13 Blatt 1

Materials & features

• Material: HSS‑Co
• Coating: nitrided and vapourised surface
• Flutes: straight fluted with chamfer for through holes
• Application: stainless, acid‑ and heat‑resistant steels >850 N/mm²
• Form: Form B (VA)
• Flank relief: flank‑ground
• Identification: blue ring

FAQ

What materials is this tap suitable for? The TECWERK machine tap is specified for stainless, acid‑ and heat‑resistant steels with tensile strengths above 850 N/mm²; the HSS‑Co substrate and surface treatment support these applications.

What tolerance class does the tap produce? Threads are produced to the ISO2 (6H) tolerance band in accordance with DIN 13 Blatt 1, suitable for standard metric fastening requirements.

Is the tap suitable for through holes and blind holes? The straight‑flute geometry with a dedicated chamfer for through holes optimises chip evacuation for through tapping; when used in blind holes, appropriate pecking or chip‑clearing cycles are recommended.

What is the shank size for toolholding compatibility? The shank diameter is 8 mm, compatible with common collet and holder systems used in machine shops.

How does the surface treatment benefit production? The nitrided and vapourised finish reduces friction and wear, extending cutting life and reducing the likelihood of built‑up edge when machining tougher alloys.

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