M8x1.25mm Machine Tap DIN 371C H HSS-Co 6H Right-Hand 40° Flute For Blind Holes, 8mm Shank - TECWERK

Combining durable HSS‑Co construction, a 6H tolerance class and a right‑hand spiral for blind‑hole tapping, this machine tap ensures longer tool life and consistent thread quality; order directly via Metav Werkzeuge or consult our specialists for application support.

Machine tap DIN 371C H M8×1.25 HSS‑Co 6H by TECWERK — High‑performance machine tap for blind‑hole threading

Machine tap DIN 371C H M8×1.25 HSS‑Co 6H is a precision machine tap designed for producing metric threads in demanding materials, especially where blind‑hole performance and repeatable tolerances are required.

• HSS‑Co alloy for enhanced wear resistance
• Right‑hand spiral 40° for blind holes
• ISO2 tolerance class 6H for precise fits
• Shaft Ø 8 mm for secure machine clamping

Durable alloy for extended tool life and fewer tool changes

Made from HSS‑Co, the tool is engineered to withstand the stresses of machining hard‑to‑machine steels (specified for materials above 1000 N/mm² strength), which results in improved wear resistance and longer service intervals. The cobalt‑alloy composition increases red‑hardness and toughness compared with standard high‑speed steel, reducing the risk of premature dulling during continuous machine tapping. This translates into fewer tool changes and lower overall process costs, while maintaining cutting performance under elevated temperatures.

Accurate threads that meet assembly demands

The tap conforms with DIN 13 Blatt 1 thread geometry and provides an internal thread to ISO2 (6H) tolerance, delivering consistent clearances for bolt and fastener assemblies. The M8×1.25 pitch is produced with controlled flank geometry and the flanks are ground for improved thread finish. For engineers and purchasing professionals, the adherence to recognised standards means predictable part interchangeability and reduced rework, supporting tighter quality control across batches.

Machine‑ready design for productive workshop use

With a right‑hand spiral 40° and a form C, type H design, this tap is optimised for blind‑hole applications where efficient chip evacuation and reduced tap breakage are critical. The flanks are relief‑ground to ease entry and reduce torque peaks, while the shaft Ø 8 mm allows secure mounting in machine collets or holders. This combination of geometry and robust shank design supports reliable machine tapping cycles and helps maintain cycle times in automated or semi‑automated production.

Choose the TECWERK machine tap via Metav Werkzeuge for assured precision and dependable delivery — contact our advisers at info@metav-werkzeuge.com or call +49 2822 7131930 for application guidance and supply options

Technical Data

• Article number: 2000867288NW
• Product: Machine tap DIN 371C H M8×1.25 HSS‑Co 6H TECWERK
• Brand: TECWERK
• Packaging unit: 1
• UID: 2000867288NW

Specifications

• Thread size: M8×1.25
• Shank diameter: Shaft Ø 8 mm
• Spiral angle: right‑hand spiral 40°
• Tolerance class: ISO2 (6H)
• Standard: DIN 13 Blatt 1

Materials & special features

• Material: HSS‑Co
• Application: for blind‑hole tapping
• Suited for: hard‑to‑machine steels >1000 N/mm²
• Design: Form C · Type H
• Flanks: relief‑ground
• Marking: red ring (Rotring)
• Right‑hand spiral for chip control

FAQ

What materials is this tap suitable for?
The TECWERK machine tap is manufactured from HSS‑Co and is specified for use on hard‑to‑machine steels, including steels with strength above 1000 N/mm², providing improved wear resistance compared with standard high‑speed steel.

Can this tap be used for blind holes?
Yes, the right‑hand spiral 40° geometry and form C design are optimised for blind‑hole tapping to aid chip removal and reduce the chance of tap breakage in confined holes.

What does the 6H tolerance mean for assemblies?
Tolerance 6H refers to an internal thread tolerance to ISO2 standards; it ensures consistent thread fit and reliable fastener engagement when used with corresponding bolt tolerances.

Is the shank compatible with machine collets?
The tool features a shaft Ø 8 mm, suitable for mounting in standard collets and holders used in machine tapping operations.

Which standard thread form does this tool produce?
Threads conform to DIN 13 Blatt 1 and the product is specified as a machine tap for metric ISO threads M8×1.25.

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