G 1/8 Inch HSS Hand Tap Set 2-Piece For Whitworth Pipe Threads DIN ISO 228, Right-Hand - TECWERK

Take advantage of a durable HSS construction and the two-step taper-and-finish arrangement for consistent Whitworth pipe threads in steels up to approximately 900 N/mm²; order the set directly via Metav Werkzeuge or contact the consultants for tailored advice.

Hand thread tap set DIN 5157 G 1/8 (HSS, ISO 228) – 2-piece pipe tap set by TECWERK

A Hand thread tap set DIN 5157 G 1/8 (HSS) designed for cutting Whitworth pipe threads to DIN ISO 228 in through and blind holes, suitable for general workshop and industrial maintenance.

• HSS material for durable cutting
• Whitworth pipe thread G to DIN ISO 228
• Suitable for through and blind holes
• Designed for steels up to 900 N/mm²

Reliable pipe connections through standardised Whitworth threads

The set produces Whitworth pipe threads (G) in accordance with DIN ISO 228, ensuring compatibility with common pipe fittings and seals. Conforming to a recognised standard reduces mismatch risk and supports repeatable assembly processes, which is particularly relevant in workshop repair and industrial maintenance contexts. This standard conformity translates into fewer sealing issues and more predictable joint performance.

Robust high-speed steel for extended service life

Manufactured from HSS, the taps offer a balance between toughness and wear resistance that suits frequent hand‑tapping tasks. The HSS composition stands up to moderate abrasive loads and maintains cutting edge integrity longer than standard tool steels. For operations in steels up to about 900 N/mm², this material choice reduces the need for frequent replacement, lowering downtime and contributing to more economical shop-floor operation.

Two-step design for precise thread form and reliable starts

The set comprises a starter and finish tap, allowing controlled material removal and accurate thread geometry. The initial tap establishes the thread profile and clearance; the finishing tap refines the form and pitch, producing a tighter tolerance fit. This two-step approach minimises the risk of chatter and cross-threading in both through and blind holes, improving first-pass yield and reducing rework.

Practical dimensions and cutting characteristics for workshop use

A 7 mm shank provides compatibility with standard tap wrenches and holders, while the right-hand cutting action matches conventional thread direction for most applications. The specification of 28 threads per inch for the G 1/8 profile aligns with established Whitworth pipe thread pitches, simplifying selection and inventory management in stores that service plumbing, hydraulics and pneumatic assemblies.

Clear benefits for procurement and maintenance teams

Choosing this tap set supports efficient tooling strategies: the standard thread form reduces part interchange issues, the HSS construction extends tool life under typical workshop conditions, and the two-piece sequence improves thread quality on the first attempt. These aspects combine to lower operational disruption and simplify spare-part planning for maintenance departments.

For reliable supply and specialist advice on the TECWERK pipe tap set, contact Metav Werkzeuge in Emmerich—email info@metav-werkzeuge.com or phone +49 2822 7131930 for ordering and technical clarification

Technical Data

• Article number: 2000867092NW
• Product name: Hand thread tap set DIN 5157 G 1/8 HSS ISO 228
• Manufacturer: TECWERK

Facts

• Shank diameter: 7 mm
• Thread pitch: 28 tpi (G 1/8)
• Material strength suitability: up to approx. 900 N/mm²

Special features

• Material: HSS
• Thread form: Whitworth pipe thread G to DIN ISO 228
• Cutting direction: right-hand cutting
• Applications: through and blind holes
• Set composition: starter and finish tap (2-piece)

FAQ

What thread standard does this tap set produce?
The set cuts Whitworth pipe threads (G) to DIN ISO 228, so components and fittings specified to that standard will be compatible with the produced threads.

Can the set be used in blind holes?
Yes. The two-piece arrangement includes a starter and a finish tap that together accommodate both through and blind holes while maintaining correct thread form.

Which materials are suitable for these taps?
The taps are made of HSS and are specified for use in steels up to approximately 900 N/mm², providing a good compromise between durability and toughness for general workshop steels.

Is the shank compatible with standard tap wrenches?
The set features a 7 mm shank, which fits common hand tap wrenches and holders used for manual tapping operations.

What is included in the set and how does it improve results?
The two-piece set contains a starter and a finish tap; using both in sequence improves thread accuracy, reduces the risk of cross-threading and yields a cleaner final thread.

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