3/4" G x 14 TPI Machine Thread Tap HSS-Co Form B Nitride Vaporised Straight Flute Reduced-Thread Whitworth G ISO 228 - TECWERK

A high‑performance HSS‑Co composition combined with a vapourised, nitrided surface ensures extended tool life and consistent thread quality for demanding pipe fittings; the tap is optimised for Whitworth G 3/4" x 14 pipe threads and hard‑to‑machine stainless and heat‑resistant steels. Order the TECWERK tap directly via Metav Werkzeuge or consult our specialists for application advice.

TECWERK Machine Pipe Tap DIN 5156B — HSS‑Co, Vapourised Surface

TECWERK machine pipe tap for Whitworth G 3/4" x 14 threads, designed for through threading in stainless and other difficult‑to‑machine alloys

• HSS‑Co material for high cutting performance
• Vapourised, nitrided surface for longer tool life
• Straight flute and relieved flanks for reliable chip control
• Whitworth G 3/4" x 14 to DIN ISO 228 for pipe threads

Robust cutting performance for demanding alloys

The HSS‑Co composition combines high‑speed steel with cobalt to maintain hardness at elevated temperatures, which translates into sustained sharpness during long runs. For applications involving stainless steels and heat‑resistant alloys with tensile strengths above 850 N/mm², this material mix reduces wear and helps preserve thread form. The result is fewer tool changes and more predictable cycle times on production lines and maintenance tasks.

Consistent thread quality and standard conformity

Engineered for Whitworth G 3/4" x 14 pipe threads and manufactured to DIN ISO 228 tolerances, the tap produces reliable, standardised threads for pipe fittings and assemblies. The straight‑flute design combined with the through‑thread configuration supports uniform chip evacuation, which aids in achieving clean thread flanks and repeatable fitment. This makes the tool suitable for workshops and light industrial production where conformity and interchangeability are essential.

Surface treatment and geometry that extend service life

The tool is vapourised and nitrided, producing a hard, low‑friction surface that improves resistance to abrasion and adhesion. In combination with the straight flute and relieved flanks (flank honing), the surface treatment reduces built‑up edge and facilitates smoother cutting in sticky or work‑hardening materials. The blue identification ring signals the Type VA variant intended for corrosion‑resistant and heat‑resistant steels, simplifying inventory distinction.

Practical workshop advantages and handling

With a 20 mm shank, the tap fits robust holders and standard machine tool collets, ensuring secure clamping during spindle operation. The geometry and coating reduce torque peaks and vibrations, which benefits tool life and machine spindle bearings. For maintenance, installation and repeat jobs, the combination of material, treatment and form offers a practical balance between durability and thread accuracy, lowering downtime and supporting consistent assembly quality.

For specification support or to secure the TECWERK DIN 5156B HSS‑Co G 3/4" x 14 tap for production use, contact Metav Werkzeuge — our consultants can confirm suitability and help with order placement

Technical Data

• Article number: 2000867498NW
• Manufacturer: TECWERK
• Packaging unit: 1

Facts

• Shank diameter: 20 mm
• Thread: G 3/4" x 14 tpi
• Standard: DIN ISO 228

Special features

• HSS‑Co material
• Form B, Type VA
• Nitrided and vapourised surface
• Blue identification ring
• Straight fluted
• Relieved flanks
• Whitworth pipe thread G
• For through threads
• Suitable for hard‑to‑machine materials, e.g. stainless, acid‑ and heat‑resistant steels > 850 N/mm²

FAQ

What materials is this tap suitable for?
The TECWERK machine pipe tap is designed for difficult‑to‑machine materials and is explicitly suitable for stainless, acid‑ and heat‑resistant steels with strengths above 850 N/mm², thanks to its HSS‑Co composition and surface treatment.

Does the tap conform to a recognised standard for pipe threads?
Yes — the tap produces Whitworth G 3/4" x 14 threads in accordance with DIN ISO 228, ensuring compatibility with standard pipe fittings.

What is the shank size and how is the tool clamped?
The tap features a 20 mm shank, suitable for machine tool holders and collets commonly used in workshop and production environments.

How does the vapourised and nitrided surface benefit operation?
The vapourised, nitrided finish increases surface hardness and reduces friction, which helps to minimise built‑up edge, extend tool life and improve overall thread quality when machining challenging alloys.

Is this tool intended for through threads or blind holes?
This variant is specified for through threads, optimising chip evacuation and thread form for pipe installations and through‑bore assemblies.

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