G 1/8" x 28 HSS-Co Machine Tap Form B Straight Flute Pipe Thread ISO 228, 7mm Shank - TECWERK

Take advantage of the HSS‑Co construction combined with a straight‑flute, flank‑relieved geometry for consistent, long‑life pipe threads; the G 1/8" x 28 specification and shank Ø 7 mm ensure easy integration into machine tapping setups. Order directly via Metav Werkzeuge or consult our specialists for application support.

Machine tap DIN 5156B G 1/8" x 28 HSS‑Co ISO 228 (TECWERK) — straight‑fluted, flank‑relieved for through threads

Machine tap DIN 5156B G 1/8" x 28 HSS‑Co ISO 228 (TECWERK) is a production‑grade tap for forming parallel pipe threads to ISO 228, optimised for machine use in short‑cycle and serial tapping operations.

• Cobalt HSS for higher heat resistance
• Straight‑flute, flank‑relieved geometry
• ISO 228 Whitworth pipe thread G 1/8" x 28
• Suitable for through threads in steel up to ~1000 N/mm²

Reliable performance for serial pipe‑threading

The cobalt‑alloy composition (HSS‑Co) offers improved hardness and thermal resistance compared with standard high‑speed steel, which translates into longer tool life and fewer tool changes during production. For shops running repeated or batch tapping operations, this results in reduced downtime and steadier cycle times. The tap’s specification for G 1/8" x 28 threads complies with ISO 228, so components produced with this tool match industry‑standard parallel pipe threads, simplifying part interchangeability and assembly processes.

Clear guidance on material capability and application

Designed for machining through threads, the tool is suitable for use in steels up to approximately 1000 N/mm² and in malleable cast iron, making it a versatile choice for general workshop and light industrial environments. The shank Ø 7 mm permits straightforward clamping in common machine tool holders; when combined with appropriate lubricants and machine feeds, the tap delivers consistent thread form. For materials beyond the stated strength range, process parameters should be reviewed before use.

Geometry that stabilises chip control and thread quality

The tap’s straight flutes and flank‑relieved cutting edges aid chip formation and evacuation during through tapping. This geometry reduces cutting forces and friction on the thread flanks, which helps to preserve thread profile and minimise the risk of jamming. In practice, the ground flanks contribute to a cleaner thread surface and more reliable assembly fits, particularly where thread engagement and sealing depend on accurate profile reproduction.

Integration and operational considerations for production

As a machine tap to DIN 5156B, the tool is intended for powered tapping processes rather than extended hand use; correct spindle speeds, feed rates and through‑coolant or lubricant selection will ensure optimal performance. The tool’s construction and geometry support high‑precision, repeatable results when used in stable fixturing and with standard tapping cycles. For end users seeking to reduce supplier complexity, obtaining the tap via Metav Werkzeuge adds the advantage of a broad supply network and inventory reliability.

Contact Metav Werkzeuge today to secure TECWERK HSS‑Co machine taps for dependable G 1/8" x 28 pipe‑thread production — call +49 2822 7131930 or email info@metav-werkzeuge.com

Technical Data

• Article number: 2000867500NW
• Designation: Machine tap DIN 5156B G 1/8" x 28 HSS‑Co ISO 228 TECWERK
• Manufacturer: TECWERK
• Packaging unit: 1

Facts

• Shank diameter: 7 mm
• Thread: G 1/8" x 28
• Standard: DIN 5156B / ISO 228
• SKU UID: 2000867500NW

Special features

• Material: HSS‑Co (cobalt high‑speed steel)
• Form: B, straight flutes, flank‑relieved
• Application: through threads
• Suitable for: steels up to ca. 1000 N/mm², malleable cast iron

FAQ

What materials can be machined with the Machine tap DIN 5156B G 1/8" x 28 HSS‑Co ISO 228 (TECWERK)?
The Machine tap DIN 5156B G 1/8" x 28 HSS‑Co ISO 228 (TECWERK) is rated for steels up to approximately 1000 N/mm² and for malleable cast iron, offering reliable performance across common workshop materials.

Is this tap suitable for machine use only or can it be used by hand?
This is a machine tap by design; the Machine tap DIN 5156B G 1/8" x 28 HSS‑Co ISO 228 (TECWERK) is optimised for powered tapping cycles and clamped machine spindles rather than prolonged hand tapping.

What does 'Form B' and 'flank‑relieved' mean for threading results?
Form B indicates a straight‑flute machine tap with ground detail; the flank‑relieved cutting edges on the Machine tap DIN 5156B G 1/8" x 28 HSS‑Co ISO 228 (TECWERK) reduce friction and improve chip formation, helping to maintain thread accuracy.

Which thread standard does this tap produce and what is it used for?
The tap produces the parallel pipe thread defined by ISO 228 (Whitworth pipe thread, G 1/8" x 28), commonly used where thread interchangeability is required for fittings that seal with a gasket or sealing face rather than on the threads.

What shank size and mounting options does the tap have?
The Machine tap DIN 5156B G 1/8" x 28 HSS‑Co ISO 228 (TECWERK) has a shank diameter of 7 mm and is intended for standard machine tool holders that accept this nominal shank size.

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