1" G 11 TPI HSS-Co Machine Pipe Tap VA Nitride Vaporised Straight Flute Whitworth ISO 228, 25mm Shank - TECWERK

Take advantage of the combination of HSS‑Co alloy, a vapourised nitride surface and straight‑fluted geometry for long tool life and consistent thread quality; order the component directly via Metav Werkzeuge or consult our experts for application support.

Machine tap DIN 5156B VA G 1″ x 11 – HSS‑Co, vapourised, TECWERK

The Machine tap DIN 5156B VA G 1″ x 11 HSS‑Co is a straight‑fluted production tap for cutting Whitworth pipe threads in demanding, hard‑to‑machine materials

• HSS‑Co high‑performance alloy
• Vapour‑treated surface finish
• Straight flutes with chamfered flanks

Durable cutting performance for heavy‑duty work

The high‑alloy HSS‑Co composition delivers elevated red‑hardness and wear resistance, which extends tool life under continuous operation. Combined with the vapourised nitride surface treatment, the tool shows improved adhesion resistance and lower friction at the cutting edge. These properties translate into fewer tool changes and steadier production throughput when machining difficult materials, supporting predictable cycle times and reduced downtime.

Accurate Whitworth pipe threads to industry standard

Designed for Whitworth G pipe thread form and produced to DIN ISO 228, the tap creates reliable, standardised threads suitable for piping and hydraulic connections. The geometry features chamfered flanks to promote a clean thread form and reduce burr formation; this benefits assembly readiness and sealing performance. Where consistent thread profile and repeatability matter, this machining solution helps maintain dimensional conformity across batches.

Designed for machine use and efficient chip control

As a DIN 5156B (Form B) machine tap with a straight‑fluted design, the tool is optimised for through‑hole threading and machine mounting. The straight flutes facilitate controlled chip formation and evacuation in continuous production environments, reducing the risk of chip packing in through threads. The robust 25 mm shank diameter ensures stable clamping and torque transmission, improving concentricity and minimising chatter in automated tapping stations.

Material compatibility and application scope

This tool is specified as Type VA and is suited to hard‑to‑machine materials, including corrosion‑resistant and heat‑resistant steels with tensile strengths above 850 N/mm². The combination of substrate and surface treatment makes it appropriate for applications where elevated strength and resistance to built‑up edge are concerns. For standard through‑thread operations in industry sectors such as hydraulics, petrochemical fittings and high‑grade stainless assemblies, the tool provides a pragmatic balance of life and performance.

Contact Metav Werkzeuge today for a tailored recommendation on TECWERK machine taps or request precise delivery and stocking information from our Emmerich warehouse

Technical data

• Article number: 2000867499NW
• SKU: 2000867499NW
• Label: Maschinengewindebohrer DIN 5156B VA G 1 Zollx11 HSS‑Co vapor.ISO 228 TECWERK
• Manufacturer: TECWERK
• Packaging unit: 1

Core specifications

• Shank diameter: 25 mm
• Thread: G 1″ × 11 threads per inch
• Standard: DIN ISO 228
• Form: DIN 5156B (Form B)

Special features

• Material: HSS‑Co
• Surface: nitride and vapourised (vapour treated)
• Flute type: straight‑fluted
• Flank: chamfered flanks
• Identification: blue ring
• Application: through threads
• Suitable for: hard‑to‑machine materials, incl. stainless and heat‑resistant steels > 850 N/mm² tensile

FAQ

What thread standard does the tap produce?
The tap produces a Whitworth G thread to DIN ISO 228, specified as G 1″ × 11 threads per inch for standard pipe connections.

Is the tool suitable for stainless or heat‑resistant steels?
Yes, the TECWERK machine tap with HSS‑Co material and vapourised surface is intended for hard‑to‑machine materials, including stainless and heat‑resistant steels with tensile strength above 850 N/mm².

Which machine configuration is the tap intended for?
This is a machine tap in DIN 5156B (Form B) design with a 25 mm shank for secure clamping and use in production tapping units.

How does the surface treatment improve performance?
The vapourised nitride finish reduces friction and improves wear resistance at the cutting edges, extending tool life and contributing to consistent thread quality.

Can this tap be used for blind holes?
The tool is optimised for through‑hole threads; for blind‑hole applications, a dedicated blind‑hole tap geometry is recommended.

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