1/2" x 14 TPI Machine Tap HSS-Co Form C 40° Right-Hand Flute For Blind Holes DIN ISO 228 - TECWERK

Benefit from a durable, high-performance thread tap that combines cobalt HSS construction with a 40° right-hand spiral for reliable chip evacuation; order or request technical advice via Metav Werkzeuge for assured supply and workshop-ready delivery.

Machine Tap DIN 5156C G 1/2" x 14 HSS-Co ISO 228 (TECWERK) — Cobalt high-speed steel, 40° right-hand spiral for blind-hole Whitworth pipe threads

The Machine Tap DIN 5156C G 1/2" x 14 HSS-Co ISO 228 (TECWERK) is designed to cut Whitworth pipe threads (G) to DIN ISO 228 in blind holes, offering robust performance in steels and malleable cast iron.

• Cobalt HSS for extended tool life
• Right-hand 40° spiral for efficient chip removal
• Relief-ground flanks for accurate thread form
• Shank Ø 16 mm for secure toolholding

Consistent pipe-thread quality for blind-hole applications

This threaded tool is engineered to produce Whitworth pipe threads to DIN ISO 228 with consistent form and fit. The geometry — specified as Form C with relief-ground flanks — maintains the flank profile critical for sealing pipe connections, reducing the need for rework. Intended for blind-hole threads, the design channels chips away from the cutting zone so that thread integrity is preserved even in confined bores, supporting predictable assembly and leak-free joints.

Enhanced cutting performance and service life

Constructed from HSS-Co (cobalt high-speed steel), the tap offers improved hot hardness and wear resistance compared with standard high-speed steels, extending tool life under continuous production. The 40° right-hand spiral improves chip flow when forming threads in interrupted or difficult cuts; this is particularly beneficial when machining steels up to approximately 1000 N/mm² and malleable cast iron, where reliable chip control reduces downtime. The combination of material and spiral form results in fewer tool changes and steadier cycle times.

Practical workshop integration and handling benefits

With a shank Ø 16 mm, the tap fits common toolholders and collets, ensuring secure clamping and concentric running for accurate threads. The tap is suitable for use in standard machine-tool setups where ISO 228 pipe threads are required, enabling straightforward integration into production or maintenance schedules. As a trusted distributor and precision partner, Metav Werkzeuge ensures supply continuity and technical consultation, helping workshops maintain throughput while keeping inventory streamlined.

Request the TECWERK machine tap through Metav Werkzeuge for dependable thread production and straightforward technical guidance — Metav Werkzeuge in Emmerich can advise on suitability and delivery at info@metav-werkzeuge.com or +49 2822 7131930

Technical data

• Article number: 2000867513NW
• Label: Maschinengewindebohrer DIN 5156C G 1/2 Zollx14 HSS-Co ISO 228 TECWERK
• Manufacturer: TECWERK
• Packaging unit: 1

Facts

• Shank diameter: 16 mm
• Spiral angle: 40°
• Thread form: G 1/2" x 14 (Whitworth pipe thread)
• Material tensile limit: up to ≈ 1000 N/mm²

Special features

• HSS-Co (cobalt high-speed steel)
• Form C
• Right-hand 40° spiral with flutes for chip evacuation
• Relief-ground flanks for precise thread profile
• Conforms to DIN ISO 228 for Whitworth pipe threads
• Designed for blind-hole (sackloch) threading
• Suitable for steels and malleable cast iron

FAQ

What materials can be machined with this tap?
The TECWERK machine tap is suitable for steels up to approximately 1000 N/mm² and for malleable cast iron, as specified for the HSS-Co tool and its geometry.

Is this tap suitable for blind-hole thread cutting?
Yes, the tool is designed for blind-hole threads; the 40° right-hand spiral supports chip evacuation from confined bores to maintain thread quality.

Which thread standard does the tap produce?
The tap produces Whitworth pipe threads to DIN ISO 228, specified as G 1/2" x 14 in the product description.

How should the tap be held in the machine?
Use a rigid, concentric holder compatible with a shank diameter of 16 mm to ensure accurate running and secure clamping during threading operations.

Can this tap be used on pre-hardened steels?
The data indicates suitability up to steels with tensile strength around 1000 N/mm²; applications involving pre-hardened steels should be assessed against that limit and discussed with Metav Werkzeuge if in doubt.

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