4mm Thread Former DIN 2174 (Form C) HSS-Co TiN Coated 6HX For Through And Blind Holes - TECWERK

Take advantage of a robust, high‑performance thread former that combines HSS‑Co construction and a TiN coating for longer tool life and reliable series production. The straight‑fluted, flank‑relieved geometry and 6HX tolerance yield consistent M4 metric threads in both through and blind holes — order via Metav Werkzeuge or consult our specialists for application advice.

Thread former DIN 2174 (DIN 371) M4 — Form C, HSS‑Co, TiN‑coated by TECWERK

The Thread former DIN 2174 (DIN 371) M4 — Form C is a precision forming tap designed for efficient production of ISO metric internal threads in non‑ferrous metals and steels.

• HSS‑Co construction for increased toughness
• TiN coating for extended tool life
• Straight flutes with flank relief
• Tolerance 6HX for ISO metric threads

Faster, more reliable thread forming for production

The combination of HSS‑Co substrate and TiN surface treatment delivers a durable tool that withstands repeated forming cycles, reducing tool changes and downtime. The cemented high‑speed steel with cobalt increases toughness and heat resistance; the TiN layer lowers friction and improves surface hardness, so the forming process runs smoother and produces cleaner threads. This tangible efficiency supports higher throughput and predictable cycle times in batch processing.

Precise, ISO‑compliant results across common materials

Designed for M4 ISO metric threads with 6HX tolerance, the tool ensures a consistent thread profile suited to assembly tolerances in industrial production. The former is specified for both through and blind hole applications and is suitable for non‑ferrous metals and steels provided the workpiece has at least 10% elongation. For customers seeking compatibility and repeatable results, the metric standardisation and tolerance class minimise rework and improve interchangeability of fastened components.

Geometry that reduces torque and improves chip control

The straight flutes and flank‑relieved cutting geometry of Form C reduce forming forces and ease material displacement, which lowers the risk of workpiece distortion when compared with conventional cutting taps. The specified thread length 13 mm and shank diameter 4.5 mm provide a compact yet stable toolholder interface, helping to maintain concentricity during forming. These features collectively decrease torque spikes and the likelihood of tool breakage, particularly in demanding series or automated setups.

Practical benefits for workshop and production environments

For workshops and production lines, the forming tap offers a balance of longevity and predictable performance that supports cost‑effective operation: fewer tool changes, reduced scrap, and consistent assembly fit. The design is particularly advantageous when working with ductile alloys and typical steels in assembly manufacture. When integrated into a controlled process, the former helps maintain quality standards while simplifying inventory through standardised M4 tooling.

For precise thread forming with TECWERK quality, contact Metav Werkzeuge for availability and application guidance — Metav Werkzeuge can advise on suitability for specific materials and production setups: info@metav-werkzeuge.com | +49 2822 7131930

Technical data

• Article number: 2000867611NW
• Brand: TECWERK

Facts

• Thread size: M4
• Thread length: 13 mm
• Shank diameter: 4.5 mm
• Tolerance: 6HX

Special features

• HSS‑Co material
• TiN coating
• Form C geometry
• Straight‑fluted (geradegenutet)
• Flank‑relieved (Flanken hinterschliffen)
• Metric ISO standard thread (DIN 2174 / DIN 371)
• For through and blind holes
• Suitable for non‑ferrous metals and steels with ≥10% elongation

FAQ

What materials can be formed with this tool?
The Thread former DIN 2174 (DIN 371) M4 — Form C from TECWERK is intended for non‑ferrous metals and steels that exhibit at least 10% elongation, enabling reliable cold forming without cutting.

Does the TiN coating make a practical difference?
Yes, the TiN coating on this TECWERK forming tap reduces friction and increases surface hardness, which extends tool life and supports cleaner thread profiles under repetitive use.

Is this tool suitable for blind holes?
The Form C configuration is suitable for both through and blind holes; the straight flutes and flank relief assist material flow and reduce forming torque in confined hole depths.

What does the 6HX tolerance mean for assembly?
A 6HX tolerance indicates a controlled allowance for internal metric threads that supports standardised assembly fits and consistent engagement with mating external threads.

What are the key dimensions to check when specifying this tool?
Important dimensions are the M4 thread size, thread length 13 mm, and shank diameter 4.5 mm, which determine compatibility with holders and the achievable thread engagement.

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