1" G Hand Tap Set HSS 2-Piece For Pipe Threads DIN ISO 228 Right-Hand 25mm Shank - TECWERK

Take advantage of precision-engineered pipe threading combined with durable HSS cutting material and a two-stage tapping sequence for consistently reliable BSPP connections; order the set via Metav Werkzeuge or consult our advisers for application-specific guidance.

Hand tap set DIN 5157 G 1 inch HSS ISO 228, 2-piece – TECWERK

Hand tap set DIN 5157 G 1 inch HSS ISO 228, 2-piece – TECWERK is a manual tapping kit for producing BSPP (ISO 228) G 1" parallel pipe threads in workshop and industrial environments

• HSS cutting material
• BSPP (ISO 228) G 1" parallel thread
• Two-piece set: roughing and finishing
• Shank Ø 25 mm, 11 TPI

Consistent, standard-compliant pipe threads for assembly reliability

The kit provides a controlled two-stage process to form BSPP (Whitworth pipe thread G) threads to ISO 228 dimensions, delivering repeatable sealing surfaces for fittings. Made from HSS, the cutters preserve cutting geometry under normal workshop use and support regrinding where required. The 11 TPI specification matches the nominal G 1" standard, ensuring compatibility with common pipe fittings and reducing rework on assemblies.

Workflow advantages through staged cutting and robust shank design

The two-piece composition—roughing and finishing tap—reduces cutting forces per pass and lowers the risk of tap breakage in blind or through holes. The substantial shank Ø 25 mm offers improved concentricity and stability in hand-held tapping wrenches or machine guides, translating into straighter threads and fewer rejects. Right-hand cutting geometry ensures standard rotational direction and predictable chip formation during manual tapping operations.

Material capability and application limits explained clearly

Designed for use in steels with tensile strength of up to approx. 900 N/mm², the set is suitable for many construction and mechanical applications that require parallel pipe threads. The designation for through and blind holes means the tools are versatile for both open-ended components and enclosed bores; appropriate tapping lubricant and correct feed should be used to preserve tool life. The use of HSS combines toughness and wear resistance, making the taps dependable across repeated cycles.

Practical handling, maintenance and safe operation in workshop settings

For best results, secure the workpiece and ensure the tapping axis is perpendicular to the bore before starting. Use light, consistent pressure with the roughing tap, then complete the thread with the finishing cutter to achieve the final tolerance. Regular inspection and regrinding of the HSS cutting edges, combined with appropriate cleaning of chips, extends service life and maintains thread quality. Proper handling reduces the likelihood of tool breakage and supports predictable production.

For reliable BSPP threading in workshops, select the TECWERK hand tap set and contact Metav Werkzeuge for tailored advice or to arrange supply from Emmerich—email info@metav-werkzeuge.com or call +49 2822 7131930

Technical data

• Article number: 2000867097NW
• Label: Handgewindebohrersatz DIN 5157 G 1 Zoll HSS ISO 228 2tlg.TECWERK
• Manufacturer: TECWERK
• Packaging unit: 1

Specifications

• Shank diameter: 25 mm
• Threads per inch: 11 TPI
• Set pieces: 2
• Suitable material tensile strength: up to approx. 900 N/mm²

Features

• Cutting material: HSS
• Thread type: BSPP / Whitworth pipe thread G (ISO 228)
• Cutting direction: right-hand cutting
• Application: through and blind holes
• Tap types: roughing and finishing

FAQ

Which thread standard does the set produce?
The TECWERK hand tap set creates BSPP (Whitworth pipe thread G) threads to ISO 228 dimensions for a G 1" connection, with 11 TPI as specified.

What components are included in the kit?
The set comprises two taps: a roughing (starter) tap and a finishing tap, supplied as a 2-piece manual tapping kit under SKU 2000867097NW.

Which materials are suitable for these taps?
These taps are intended for machining steels with tensile strength up to about 900 N/mm² and are suitable for both through and blind hole operations when used with correct lubrication.

How should the taps be maintained?
Maintain cutting performance by cleaning chips after use, applying suitable tapping lubricant during operation, and arranging regrinding of the HSS cutters when wear becomes evident.

Are the taps suitable for machine tapping as well as hand use?
The robust shank Ø 25 mm and standard thread form allow these taps to be used with compatible machine guides or hand-tapping wrenches, observing appropriate speed and feed for HSS tooling.

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