G 1/4" x 19 HSS-Co Machine Tap Form B Straight Flute Back-Cutting Whitworth Pipe Thread DIN ISO 228, 11mm Shank - TECWERK

Take advantage of a HSS‑Co construction and flank‑ground cutting geometry for durable, accurate Whitworth pipe threading; the straight‑fluted Form B design ensures consistent chip evacuation and reliable performance in through‑hole applications. Order directly via Metav Werkzeuge or consult our specialists for technical guidance and fast supply from Emmerich.

Machine pipe tap DIN 5156B G 1/4" x 19 HSS‑Co ISO 228 – TECWERK

The machine pipe tap DIN 5156B G 1/4" x 19 (HSS‑Co) is a dedicated Whitworth parallel pipe thread tap for through threads, engineered for use in steels up to c. 1000 N/mm² and in malleable cast iron.

• HSS‑Co high‑speed cobalt steel construction
• Straight fluted Form B for stable chip evacuation
• Flank‑ground cutting edges for precise threads
• For Whitworth G threads to ISO 228, through‑hole use

Durable, wear‑resistant cutting for industrial production

The combination of HSS‑Co (cobalt high‑speed steel) and a Form B design provides a balance of hardness and toughness that extends tool life under continuous production loads. For shops working with medium‑strength steels and temper cast iron, this material choice reduces premature wear and maintains thread quality over longer runs. The flank‑ground geometry refines the cutting edge, lowering friction and producing a cleaner thread profile, which in turn reduces rework and improves assembly fit.

Consistent chip control and machining stability

The straight flutes and optimised geometry of this tap promote reliable chip evacuation during through‑hole tapping, minimising the risk of chip congestion and breakage. Stable chip flow leads to fewer interrupted cycles and less downtime, which is particularly valuable on automated tapping stations or CNC rigs. The 11 mm shank diameter provides robust clamping in standard tool holders, contributing to concentricity and reduced vibration for more precise, repeatable threads.

Standards‑compliant threads for seamless integration

Designed to cut Whitworth parallel pipe threads conforming to ISO 228, the tool produces G 1/4" threads with 19 tpi, aligning with widely used fittings and components. Compliance with DIN 5156B and ISO standards simplifies quality assurance and documentation in regulated production environments. The tap’s suitability for through threads means it integrates readily into existing machining processes without additional special fixturing, helping to streamline setup and maintain production throughput.

For ISO‑compliant, long‑running pipe threading from TECWERK, contact Metav Werkzeuge GmbH in Emmerich for fast supply and expert advice — eMail: info@metav-werkzeuge.com | Tel: +49 2822 7131930 — Metav’s consultants will advise on tool integration and delivery from stock.

Technical data

• Article number: 2000867501NW
• Brand: TECWERK
• Packaging unit: 1
• UID: 2000867501NW

Facts

• Shank diameter: 11 mm
• Thread form: G 1/4" — 19 tpi
• Material suitability: steels up to approx. 1000 N/mm²

Special features

• Material: HSS‑Co (cobalt high‑speed steel)
• Form B design, straight fluted
• Flank‑ground cutting edges
• Whitworth parallel pipe thread G to ISO 228
• For through‑hole tapping, suitable for temper cast iron

FAQ

What thread standard does this tap produce?
The tap produces Whitworth parallel pipe threads to ISO 228, specifically G 1/4" with 19 tpi, as specified for the TECWERK machine pipe tap (DIN 5156B).

Which materials is the tap suitable for?
The TECWERK tap is suitable for through‑hole threading in steels up to approximately 1000 N/mm² and in temper cast iron, matching the tool’s HSS‑Co construction and geometry.

What is the tool material and how does it affect performance?
Made from HSS‑Co (cobalt high‑speed steel), the tap offers enhanced heat resistance and wear life compared with standard high‑speed steels, supporting longer production runs with consistent thread quality.

What shank size should the machine holder accommodate?
The tap has an 11 mm shank diameter, suitable for standard holders that accept this dimension to ensure stable clamping and concentricity during machining.

Is the tap intended for blind or through threads?
This tool is specified for through‑hole threading, which supports reliable chip evacuation and reduces the risk of chip blockage in continuous operations.

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