1" x 11 TPI HSS-Co Machine Thread Tap Form B Straight Flute Gas Thread G ISO 228 25mm Shank - TECWERK

Take advantage of the combination of high-strength HSS‑Co material, a vapour‑deposited coating and a rigid 25 mm shank for consistent thread quality and longer tool life; order the tap directly via Metav Werkzeuge or consult our specialists for application advice.

Machine Tap DIN 5156B — Whitworth G 1" x 11, HSS‑Co (TECWERK)

The Machine Tap DIN 5156B (G 1" x 11) is a universal, straight‑flute machine tap engineered for producing Whitworth pipe threads in steel, stainless steels and non‑ferrous metals.

• High‑performance HSS‑Co material
• Designed for Whitworth G 1" x 11 threads
• Straight flutes with flank relief
• Vapour‑deposited coating for wear resistance

Reliable Whitworth pipe threads for industrial fittings

The geometry complies with the Whitworth pipe‑thread specification and DIN ISO 228, which delivers repeatable, compatible threads for pipework and fittings. By using a machine tap built to these standards, the risk of mismatched threads or seal failures is reduced, resulting in fewer reworks and improved assembly reliability for hydraulic and pneumatic systems.

Longer service life through material and coating

Made from HSS‑Co (cobalt‑alloyed high‑speed steel), the tool offers improved hot hardness and edge retention compared with conventional high‑speed steels. The vapour‑deposited coating increases wear resistance and reduces adhesion of chips, extending cutting life under interrupted or continuous machining and lowering total tooling costs over production runs.

Geometry designed for consistent performance

The straight flutes and flank relief grinding promote controlled chip formation and reduce cutting forces, while the peel chamfer is optimised for through‑threads to ensure clean starts and reliable thread profiles. The 25 mm shank provides the rigidity needed for machine tapping, helping to maintain concentricity and reduce vibration during operation.

Universal form and broad material compatibility

Classified as Form B — universal, the tap is intended for machine use and is suitable for machining steel, stainless steels, spheroidal cast iron and non‑ferrous metals. This versatility makes it a practical choice for mixed‑workshop environments where a single, robust tool must perform across a range of components and alloys, simplifying tool management and inventory.

Contact Metav Werkzeuge for tailored advice on TECWERK machine taps and to confirm compatibility with specific machines and materials

Technical Data

• Article number: 2000867946NW
• SKU: 2000867946NW
• Product designation: Machine Tap DIN 5156B G 1" x 11 HSS‑Co TECWERK

Facts

• Shank diameter: 25 mm
• Thread form: Whitworth pipe thread G 1" x 11 TPI
• Packaging unit: 1

Special features

• HSS‑Co material
• Form B (universal)
• Vapour‑deposited coating
• Green ring identification
• Straight fluted
• Flank relief ground
• Peel chamfer for through threads
• Conforms to DIN ISO 228
• Suitable for steel, stainless steels, spheroidal cast iron, non‑ferrous metals

FAQ

What thread standard does this tap produce?
The tap produces Whitworth pipe threads in accordance with DIN ISO 228; the specification corresponds to G 1" x 11 TPI for compatible piping and fittings.

Which materials can be machined with this tap?
This TECWERK machine tap is suitable for machining steel, stainless steels, spheroidal cast iron and non‑ferrous metals as indicated in the technical description.

Is this tool intended for hand tapping or machine use?
The tool is a machine tap in Form B (universal) and is designed for use on machines such as tapping heads or CNC tapping units rather than manual hand tapping.

How does the coating affect tool life?
The vapour‑deposited coating on the TECWERK tap improves wear resistance and reduces adhesion of chips, which generally extends service life and maintains thread quality over longer production runs.

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