8mm Thread Former DIN 2174 (DIN 371) M8 Form C HSS-Co TiN Coated 6HX, 22mm Thread Length - TECWERK

Benefit from robust M8 ISO thread forming with HSS‑Co construction and TiN coating for extended tool life; the straight‑fluted geometry and honed flanks produce clean, burr‑free threads in both through and blind holes. Order the TECWERK thread former directly via Metav Werkzeuge or consult our specialists for application support.

Thread Former DIN 2174 (DIN 371) M8 Form C – HSS‑Co, TiN‑coated by TECWERK

The Thread Former DIN 2174 (DIN 371) M8 Form C is a cobalt‑alloy HSS thread‑forming tool, TiN‑coated and straight‑fluted, engineered to produce ISO metric M8 threads in through and blind holes in non‑ferrous metals and suitable steels.

• HSS‑Co construction with TiN coating
• Straight flutes with honed flanks for smooth threads
• Produces ISO metric M8 threads, tolerance 6HX
• Suitable for through and blind hole operations
• For non‑ferrous metals and steels with ≥10% elongation

Durable materials and coating for longer production runs

The use of HSS‑Co (cobalt‑alloy high‑speed steel) combined with a TiN coating increases wear resistance and thermal stability during thread forming. Unlike cutting taps, this forming tool displaces material to create a thread profile, which reduces chip formation and the risk of jamming. The enhanced surface hardness from the coating helps maintain dimensional integrity over multiple cycles, translating into fewer tool changes and more predictable machine uptime in repetitive operations.

Consistent ISO M8 threads with tight tolerance

Designed to form ISO metric M8 threads to tolerance 6HX, the tool delivers repeatable thread geometry suitable for assembly applications that demand reliable fit and strength. Thread forming cold‑works the parent material, producing a denser flank surface compared with cutting methods; this typically improves fatigue resistance of the fastened joint. The process requires materials with adequate ductility—here specified as materials with at least 10% elongation—to prevent cracking during deformation.

Practical design for through and blind holes

The Form C geometry with straight flutes and flanks honed supports both through‑hole and blind‑hole forming. Straight flutes guide displaced material away from the forming area, while honed flanks reduce local stress concentrations and improve surface finish. A thread length of 22 mm and a shank diameter of 8 mm suit common clamping arrangements; the robust shank provides straightforward mounting in tool holders or collets for stable machining operations.

Integration into workshop workflows and economic benefits

Using a forming tool of this specification reduces waste by eliminating chips and often shortens cycle times compared with thread cutting in suitable materials. The combination of HSS‑Co and TiN supports prolonged service life, which lowers overall tooling cost per part in medium to high‑volume production. Additionally, the absence of chip evacuation concerns simplifies disposal and housekeeping, contributing to a cleaner and safer workshop environment.

Order the TECWERK M8 thread former via Metav Werkzeuge for reliable supply from Emmerich, or contact our technical consultants at info@metav-werkzeuge.com / +49 2822 7131930 to confirm suitability for specific materials and hole types

Technical data

• Article number: 2000867614NW
• Label: Gewindeformer DIN 2174 (DIN 371) M8 Form C HSS‑Co TiN 6HX o.SN TECWERK
• Manufacturer: TECWERK
• Packaging unit: 1

Facts

• Thread size: M8
• Tolerance: 6HX
• Thread length: 22 mm
• Shank diameter: 8 mm
• Standards: DIN 2174 (DIN 371)

Special features

• Material: HSS‑Co (cobalt‑alloy high‑speed steel)
• Coating: TiN‑coated
• Geometry: Form C, straight‑fluted
• Flanks: honed (flank honing)
• Application: through and blind holes
• Suitable materials: non‑ferrous metals and steels with ≥10% elongation
• Thread type: ISO metric forming (no chip‑producing cut)

FAQ

What materials can be formed with this tool?
The TECWERK thread former is specified for non‑ferrous metals and steels that exhibit at least 10% elongation, making it suitable for ductile materials where cold forming is viable.

Does this tool create chips during operation?
No; as a thread former, the tool displaces material rather than cutting, so chip formation is eliminated and the process yields a denser, work‑hardened thread flank.

Is the tool suitable for blind‑hole forming?
Yes; the Form C straight‑flute design and honed flanks are intended to support both through‑hole and blind‑hole thread forming, though appropriate lubrication and process control are recommended for blind holes.

What does the tolerance class 6HX indicate?
Tolerance 6HX defines the internal thread tolerance and fit for ISO metric threads; the class ensures compatibility with standard external threads while accounting for forming characteristics.

Which standards apply to this thread former?
The tool conforms to the DIN 2174 (DIN 371) designation for thread forming tools, intended for creating ISO metric threads by forming rather than cutting.

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