M8x1.25mm Machine Tap DIN 371C GG HSS-Co TiCN Coated 6HX For Cast Iron Through & Blind Holes - TECWERK

Benefit from the combination of a HSS‑Co cutting core, TiCN coating and straight‑flute Form C geometry for consistent thread quality in cast irons; order the machine tap directly via Metav Werkzeuge or ask our consultants if needed.

Machine Tap DIN 371C GG M8×1.25 HSS‑Co, TiCN‑coated — TECWERK

The Machine Tap DIN 371C GG M8×1.25 HSS‑Co TiCN 6HX TECWERK is a straight‑fluted Form C tap engineered for cutting metric ISO threads in a range of cast‑iron materials, suited for both through and blind hole applications.

• HSS‑Co core for durability
• TiCN coating for longer life
• Straight flutes for consistent chip control
• Tolerance 6HX for reliable thread fit

Consistent cutting performance for cast‑iron work

Designed for demanding workshop and production environments, this tap combines a HSS‑Co (cobalt high‑speed steel) substrate with a TiCN coating to deliver improved wear resistance and edge stability. The Form C geometry with straight flutes promotes predictable chip formation when machining grey and graphite cast irons, while relieved flanks reduce friction at the cutting edges. The result is reduced tool wear and a stable cutting process, which supports reliable thread quality over longer production runs. The tap’s construction is particularly beneficial where material abrasiveness and intermittent cutting loads would otherwise shorten tool life.

Precise fit and standard compliance for threaded assemblies

Built to DIN 371C and referencing DIN 13 Part 1, the tool provides metric ISO threads with 6HX tolerance for controlled internal diameter and fit. Tolerance class 6HX offers a predictable allowance for mating external threads, helping to ensure assembly consistency across batches. The tap is ground to Form C and marked with a white identification ring, enabling fast recognition in a tool store. For engineers and buyers, this combination of standards and tolerance control translates into fewer reworks and a higher first‑pass yield when producing M8×1.25 threads in cast‑iron components.

Practical integration into workshop tooling systems

With a shank diameter of 8 mm, the tap fits common collet and chuck setups used in bench and CNC tapping applications. The straight‑flute design simplifies chip evacuation in interrupted cuts and tight cavities, reducing the risk of clogging in through and blind holes. The tool’s Type GG designation denotes its machine‑tap quality, suitable for both single‑station machines and automated tool changers when paired with appropriate holders. These features support smoother process flows and fewer tool changes, contributing to measurable productivity benefits in small series and larger production environments alike.

Material recommendations and application guidance

This tap is specified for grey cast iron, graphite cast iron and malleable cast iron, materials in which the combination of HSS‑Co and TiCN performs well. For best results, select cutting speeds and feeds that match machine rigidity and component fixturing; employ suitable tapping lubrication for cast irons to aid chip formation and surface finish. The ground flanks and straight‑flute geometry make the tool especially effective when machining brittle, flaky cast structures where controlled chip breaking is essential. For tailored advice on cutting parameters or material pairing, Metav Werkzeuge’s technical advisers can support process optimisation and tool selection.

Contact Metav Werkzeuge for tailored application advice and to secure TECWERK machine taps directly; call +49 2822 7131930 or e‑mail info@metav-werkzeuge.com for fast, practical support

Technical data

• Article number: 2000867425NW
• Product name: Machine tap DIN 371C GG M8×1.25 HSS‑Co TiCN 6HX TECWERK
• Manufacturer: TECWERK
• Packaging unit: 1

Core specifications

• Thread: M8×1.25
• Tolerance class: 6HX
• Shank diameter: 8 mm
• Standard: DIN 371C, DIN 13 Part 1

Features

• HSS‑Co material
• Form C geometry
• Type GG machine tap
• TiCN coating
• White identification ring
• Straight flutes
• Relieved flanks (flank ground)
• Metric ISO thread
• Suitable for through and blind holes
• For grey cast iron, graphite cast iron, malleable cast iron

FAQ

What materials is the tap suitable for?
The TECWERK machine tap is specified for grey cast iron, graphite cast iron and malleable cast iron and is optimised for those substrates.

What does the 6HX tolerance mean for assembly?
Tolerance class 6HX indicates a slightly larger internal thread allowance to ensure a consistent fit with standard external threads when using the TECWERK M8×1.25 tap.

Can the tap be used for both through and blind holes?
Yes, the tool’s straight flutes and geometry are designed for reliable performance in both through and blind‑hole tapping operations.

How does the TiCN coating benefit workshop operations?
The TiCN coating on the TECWERK tap increases surface hardness and reduces adhesive wear, extending tool life and maintaining thread quality over longer production cycles.

Will the shank fit common collet systems?
The 8 mm shank diameter is compatible with standard collets and holders used in bench machines and many CNC tool systems.

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