M8x1.25mm Machine Tap DIN 371C HSS-Co Form C Right-Hand 40° Undercut Flanks ISO2 (6H), Blind Hole, 8mm Shank - TECWERK

The combination of HSS‑Co construction, Form C geometry, and a right‑hand 40° spiral delivers reliable blind‑hole threading with excellent chip control; benefit from consistent ISO‑class threads and robust tool life in medium‑strength steels. Order the machine tap directly via Metav Werkzeuge or ask our consultants if needed.

Machine tap DIN 371C M8 x 1.25 mm, HSS‑Co, 6H (TECWERK)

The Machine tap DIN 371C M8 x 1.25 mm HSS‑Co 6H TECWERK is a precision tool for producing metric ISO threads in blind holes, designed for industrial machining of steels up to approximately 900 N/mm².

• HSS‑Co substrate for higher wear resistance
• Form C geometry for smooth chip evacuation
• Right‑hand 40° spiral for blind‑hole tapping
• Relieved flanks for reduced thread burrs
• Shank Ø 8 mm for secure machine clamping

Accurate ISO threads for repeatable assemblies

This tap produces metric ISO threads to DIN specifications, delivered in ISO2 (6H) tolerance to ensure interchangeability and reliable fit in assembly work. The combination of standardised pitch and tight tolerance translates into fewer rejected parts and consistent torque behaviour in bolted joints. For production runs where repeatable quality is essential, this tool supports predictable results and simplifies quality control processes.

Geometry and material that cut cycle times

Constructed from HSS‑Co, the tool offers increased heat and wear resistance compared with standard high‑speed steel, extending service intervals under heavy use. The Form C cutting geometry, paired with a right‑hand 40° spiral, promotes controlled chip formation and evacuation in blind holes; this reduces the risk of chip clogging and broken taps. Relieved flanks lower friction in the thread flank area, reducing insertion torque and improving surface finish, which in turn can shorten downstream deburring or finishing steps.

Practical compatibility and machine readiness

Designed for machining steels up to ~900 N/mm², the tap is suitable for many engineering steels used in mechanical components. The 8 mm shank ensures stable clamping in standard toolholders and automatic tapping heads, aiding precise spindle alignment and minimising run‑out. Where machines run automated cycles, the tool’s geometry supports steady feed and reduces the occurrence of tap breakage, enhancing uptime and production flow.

Handling recommendations and lifecycle considerations

To achieve the intended tool life and thread quality, use appropriate cutting fluid and match spindle speeds to material and machine rigidity. The tool’s HSS‑Co composition benefits from moderate cutting speeds and proper lubrication; these measures help maintain dimensional stability and thread integrity over extended production. For applications with unusual material grades or interrupted cuts, consult machining tables or Metav Werkzeuge’s technical advisors to confirm optimal parameters.

For secure supply and expert advice on this TECWERK machine tap, contact Metav Werkzeuge to check stock and suitable machining parameters.

Technical data

• Article number: 2000867268NW
• Product: Machine tap DIN 371C M8 x 1.25 mm HSS‑Co 6H TECWERK
• Manufacturer: TECWERK
• Packaging unit: 1

Numbers / Core technical data

• Thread: M8 x 1.25 mm
• Shank diameter: 8 mm
• Spiral angle: 40°
• Suitable material strength: up to ~900 N/mm²
• Tolerance class: ISO2 (6H)

Special features / Design

• HSS‑Co material
• Form C geometry
• Right‑hand spiral
• Flanks relieved
• Metric ISO thread to DIN 13 sheet 1
• For blind‑hole tapping

FAQ

What materials is this tap suitable for?
The TECWERK machine tap is intended for use in steels with tensile strengths up to approximately 900 N/mm² and is designed to perform reliably in typical engineering steel grades.

Is this tap suitable for blind‑hole threads?
Yes, the tool is specified for blind‑hole tapping and its 40° right‑hand spiral and relieved flanks improve chip evacuation in closed cavities.

Which tolerance class does the tap produce?
Threads are produced to the ISO2 (6H) tolerance class, aligning with DIN thread standards for interchangeability and precise assembly.

What shank size is required for clamping?
The tap features an 8 mm shank, suitable for standard collets and tapping holders in automated and manual machinery.

What does Form C mean for performance?
Form C denotes a cutting geometry optimised for consistent chip formation and controlled evacuation, which helps reduce tap breakage and improve surface finish during blind‑hole operations.

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