25mm G 1" x 11 HSS-Co Machine Tap Straight Flute Form B For Through Threads, ISO 228 - TECWERK

Take advantage of the combination of HSS‑Co construction, straight‑fluted Form B geometry and a robust 25 mm shank for reliable Whitworth G threading in demanding workshop use; order the tap directly via Metav Werkzeuge or consult the Metav team for technical advice.

Machine pipe tap DIN 5156B G 1" x11 HSS‑Co ISO 228 – TECWERK

A machine pipe tap for Whitworth G threads, specified to DIN ISO 228 and engineered for through threads in steels and malleable cast iron.

• Solid HSS‑Co material for durability
• Straight‑fluted Form B for stable cutting
• For Whitworth pipe threads G to ISO 228
• Shank Ø 25 mm, suited for through threads

Precision threading that reduces rework and downtime

The machine pipe tap DIN 5156B G 1" x11 HSS‑Co ISO 228 is designed to deliver repeatable, high‑quality threads in production and repair environments. Constructed from HSS‑Co, the tool provides elevated wear resistance and retains cutting geometry longer than standard high‑speed steels, which translates into fewer tool changes and reduced machine downtime. The Form B straight‑fluted design with flank relief produces clean thread flanks and consistent chip evacuation when used in through‑hole operations, improving first‑pass accuracy and lowering the risk of rework.

Broad material compatibility for versatile workshop use

This tap is suitable for machining in steel up to 1000 N/mm² and in malleable cast iron, enabling a single tool to cover common industrial applications. The capability to handle these materials means fewer specialised tools are required, simplifying tooling inventories. The shank Ø 25 mm ensures secure clamping in standard toolholders and reduces run‑out, supporting consistent performance across batches and enhancing component interchangeability in assemblies that rely on Whitworth G pipe fittings.

Reliable integration into production workflows

Engineered for through threads and conforming to DIN ISO 228, this tap aligns with established standards to facilitate predictable assembly and inspection processes. The straight‑fluted Form B geometry balances cutting forces for stable operation under varying feeds, and the HSS‑Co composition offers high durability under cyclic loads. For production planners and maintenance engineers, the tap provides a pragmatic balance of longevity and machining quality, supporting leaner tool management and dependable throughput in workshop and light industrial settings.

For Whitworth G thread requirements choose the TECWERK machine pipe tap and contact Metav Werkzeuge for tailored advice and stock information at info@metav-werkzeuge.com or call +49 2822 7131930

Technical Data

• Article number: 2000867505NW
• Manufacturer: TECWERK
• Packaging unit: 1

Facts

• Shank diameter: 25 mm
• Thread: G 1" x 11 (11 tpi)
• Suitable for steels up to approx. 1000 N/mm²

Special features

• HSS‑Co material
• Form B, straight fluted, flank relief
• Whitworth pipe thread G to DIN ISO 228
• For through threads; suitable for steel and malleable cast iron

FAQ

What thread standard does this tap conform to?
The tap conforms to DIN ISO 228 for Whitworth pipe threads G and is specified as G 1" x11 for standard pipe fittings.

Which materials can be machined with this tap?
This HSS‑Co machine pipe tap is suitable for steel up to approximately 1000 N/mm² and for malleable cast iron, offering versatility for common workshop materials.

What is the shank size and how does it affect clamping?
The shank Ø 25 mm provides a secure grip in standard toolholders, reducing run‑out and supporting consistent thread quality during through‑hole tapping.

Is the geometry suitable for through threads or blind holes?
The straight‑fluted Form B geometry is optimised for through threads, promoting efficient chip evacuation and reliable thread form in continuous drilling conditions.

How does the HSS‑Co composition benefit production use?
The HSS‑Co alloy improves wear resistance and heat tolerance compared with standard HSS, extending tool life and reducing frequency of replacement in repetitive production tasks.

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