3/4" Whitworth Pipe Tap Set HSS 2-Piece, Right-Hand, 20mm Shank - TECWERK

Take advantage of a robust combination of HSS cutting material, precise BSPP G 3/4 thread to ISO 228, and a two-piece design that ensures fast start-up and accurate finish threading in steels up to ≈900 N/mm²; order the set directly via Metav Werkzeuge or consult our advisors for technical guidance.

TECWERK Hand tap set G 3/4 HSS ISO 228 (2-piece)

The TECWERK hand tap set G 3/4 is a two-piece tapping solution for producing BSP parallel (G) threads to ISO 228 in through and blind holes, optimised for workshop and maintenance environments.

• HSS construction for long tool life
• BSPP G 3/4 threads to ISO 228
• Two-piece set: starter and finishing tap
• Suitable for steels up to approx. 900 N/mm²

Reliable BSPP threads for consistent assembly performance

The two-piece tap set is designed to produce repeatable, standard-compliant BSPP (G) threads to ISO 228, combining a starter and a finishing cutter for reliable thread form and fit. The initial cutter eases entry and centres the tool, while the finishing cutter restores full profile and tolerance, reducing rework and ensuring swift assembly of pipe connections. This approach improves throughput in repair and small-batch production where consistent sealing surfaces and thread accuracy are essential.

Workshop-ready design for efficient manual tapping

Constructed from HSS, the set withstands typical workshop stresses and maintains sharp cutting edges longer than standard carbon tools. The 20 mm shank provides stable clamping in ordinary tap handles or adaptors, and the right-hand cutting geometry matches conventional machining practise. For users less familiar with tapping terminology: the starter tap creates a controlled lead-in, the finishing tap completes the thread profile to specification — together they reduce the risk of cross-threading and minimise the need for corrective machining.

Broad material compatibility and straightforward application

Suitable for use in steels with tensile strengths of up to ≈900 N/mm², this set handles common maintenance and fabrication tasks without specialised equipment. It is engineered for both through and blind holes, with a thread pitch of 14 tpi appropriate for G 3/4 applications. The conformity to DIN 5157 and ISO 228 standards means the resulting threads are compatible with standard pipe fittings and sealing solutions, facilitating reliable joint assembly and leak-free connections in hydraulic and pneumatic systems.

Discuss suitability with Metav Werkzeuge today: contact info@metav-werkzeuge.com or call +49 2822 7131930 for tailored advice and supply

Technical data

• Article number: 2000867096NW
• Label: Hand tap set DIN 5157 G 3/4 HSS ISO 228 2-piece
• Manufacturer: TECWERK
• UID: 2000867096NW

Facts

• Shank diameter: 20 mm
• Threads per inch: 14 tpi
• Set size: 2-piece
• Material strength suitability: up to approx. 900 N/mm²

Special features

• Material: HSS
• Thread type: BSP parallel (G) to ISO 228 / DIN 5157
• Right-hand cutting
• For through and blind holes
• Includes starter and finishing tap

FAQ

What thread standard does this set produce?
The TECWERK hand tap set produces BSP parallel (G) threads to ISO 228 (DIN 5157), suitable for standard pipe fittings.

Is the set suitable for blind holes?
Yes, the two-piece configuration is specified for both through and blind holes and includes a starter and a finishing tap for complete profile formation.

What materials can be machined with these taps?
These HSS taps are intended for steels up to approximately 900 N/mm² tensile strength; the set performs well in typical workshop steel applications.

How many pieces are included and what is the shank size?
The delivery comprises a two-piece set (starter and finishing tap) with a 20 mm shank diameter for stable clamping.

What is the thread pitch and how does it relate to pipe fittings?
The set cuts G 3/4 threads with 14 tpi, matching the standard pitch for BSPP G 3/4 pipe connections.

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