G 1/8" x 28 Machine Pipe Tap HSS-Co Nitrided Vaporised Straight Flute Whitworth - TECWERK

Take advantage of a HSS‑Co construction and a nitrided, vapourised surface for durable performance when cutting Whitworth pipe threads; order the tap directly via Metav Werkzeuge or consult the Metav team for application guidance.

Machine tap DIN 5156B VA – G 1/8" x 28, HSS‑Co, TECWERK

The Machine tap DIN 5156B VA – G 1/8" x 28 HSS‑Co is a straight‑fluted production tap for cutting Whitworth pipe threads to DIN ISO 228 in through‑thread applications, especially for demanding, corrosion‑resistant materials.

• HSS‑Co high‑speed cobalt for hard materials
• Nitrided and vapourised surface finish
• Whitworth pipe thread G 1/8" x 28 to ISO 228
• Straight flute with chamfered flanks

High‑performance cutting for demanding materials

Manufactured from HSS‑Co, this production tap delivers increased red‑hardness and wear resistance compared with standard high‑speed steels, which translates into longer tool life when machining tough alloys. The combination of Form B Type VA geometry and a nitrided plus vapourised surface improves resistance to adhesive wear and reduces the risk of galling on stainless and acid‑resistant steels with tensile strengths above 850 N/mm². For production environments where tool longevity and process stability matter, this geometry offers a balance of cutting edge strength and controlled chip formation.

Accurate Whitworth pipe threads according to ISO 228

The tool cuts Whitworth pipe thread G 1/8" x 28 in compliance with DIN ISO 228, making it suitable for parallel pipe connections and through‑thread installations. The thread form is produced with a straight‑flute tap designed for stable engagement and predictable dimensional results. For assembly work that requires standardised sealing solutions, the consistent thread geometry ensures reliable mating with corresponding pipe fittings and reduces rework associated with misformed threads.

Surface treatment and flute design for smoother machining

A nitrided and vapourised finish provides enhanced surface hardness and a reduced coefficient of friction, which helps chips evacuate more easily and lowers tapping torque. The straight flutes and ground flanks promote regular chip breaking and make the tool more tolerant of intermittent chip evacuation typical in through‑hole tapping. The blue ring marking assists identification in busy tooling racks, while the improved surface finish supports coolant wetting and heat management during high‑rate machining.

Machine compatibility and handling benefits

Equipped with a 7 mm shank, the tap is configured for secure clamping in standard machine tool holders and quick‑change tapping systems. Intended for through‑thread applications, the tool is suitable for series production on lathes and machining centres that accept straight‑flute machine taps. For processes involving hard, corrosion‑resistant steels, the design reduces the frequency of tool changes and supports higher overall equipment effectiveness. For specific cycle parameters or material‑dependent advice, Metav Werkzeuge can provide technical guidance and procurement support.

Choose the TECWERK HSS‑Co machine tap through Metav Werkzeuge for dependable thread quality and consistent supply from Emmerich—contact Metav Werkzeuge for tailored advice and prompt fulfilment

Technical data

• Article number: 2000867493NW
• Manufacturer: TECWERK
• Description: Machine tap DIN 5156B VA G 1/8" x 28 HSS‑Co vapourised TECWERK
• Packaging unit: 1

Facts

• Shank diameter: 7 mm
• Thread: G 1/8" x 28
• Suitable for materials > 850 N/mm² tensile strength
• For through‑thread applications

Special features

• Material: HSS‑Co
• Form B, Type VA
• Nitrided and vapourised surface finish
• Blue ring identification
• Straight flutes, flanks ground
• Whitworth pipe thread to DIN ISO 228
• For hard‑to‑machine, corrosion‑resistant steels

FAQ

Is this tap suitable for stainless and acid‑resistant steels?
Yes. The TECWERK Machine tap DIN 5156B VA is designed for hard‑to‑machine, corrosion‑resistant steels and is specified for materials with tensile strengths above 850 N/mm².

Which thread standard and size does the tap produce?
The tool cuts a Whitworth pipe thread G 1/8" x 28 in accordance with DIN ISO 228, suitable for parallel pipe connections and through‑thread use.

Can the tap be used in automatic tapping heads and machining centres?
Yes. The straight‑flute, machine‑grade design and 7 mm shank make the tap compatible with standard machine tool holders and production tapping systems for through‑hole threading.

What surface treatment does the tap have to improve wear resistance?
The TECWERK tap features a nitrided and vapourised surface finish, enhancing surface hardness and helping to reduce adhesive wear during machining.

Is the tap intended for through threads or blind holes?
The specification indicates the tool is for through‑thread applications, optimised for chip evacuation and stable cutting in passages.

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