3/8" x 19 Whitworth Pipe Tap HSS-Co Form C Vapourised Green Ring 40° Spiral - TECWERK

Take advantage of the combination of HSS‑Co construction, right‑hand 40° spiral for reliable chip evacuation, and a shank Ø 12 mm for secure clamping; order the TECWERK machine tap directly via Metav Werkzeuge or consult the Metav team for application advice.

TECWERK machine tap DIN 5156C — Universal Whitworth G 3/8" x 19, HSS‑Co, vapour‑treated

TECWERK machine tap DIN 5156C is a universal machine tap for Whitworth pipe threads (G) designed for blind‑hole tapping in demanding workshop and production environments.

• HSS‑Co for high wear resistance
• Whitworth G to DIN ISO 228
• Right‑hand spiral 40° for chip control
• Shank Ø 12 mm, universal type

Consistent cutting performance for production use

The HSS‑Co composition ensures a high resistance to heat and abrasion during continuous tapping cycles, so the tool maintains profile accuracy under load. Manufactured in Form C as a universal type, the tap balances cutting strength and chip evacuation for a wide range of operations. The vapour‑treated surface improves tool life by reducing friction and offering improved wear characteristics, which in turn lowers tool change frequency and supports a steady production flow.

Controlled chips and cleaner threads in blind holes

A right‑hand spiral 40° directs chips back toward the hole entry, which is particularly effective when producing blind holes and reduces the risk of breakage. The flanks are honed to improve thread finish and decrease burr formation, resulting in cleaner internal threads and fewer rework steps. The thread form is Whitworth G manufactured to DIN ISO 228, a standard for parallel pipe threads that makes the tap suitable for reliable sealing and consistent mating with compatible components.

Compatibility with a broad range of materials

This machine tap is specified for use in steel, stainless steel, spheroidal cast iron and non‑ferrous metals, offering versatility across metalworking tasks. The cobalt‑alloyed high‑speed steel retains hardness at elevated temperatures, which assists in cutting tougher alloys and maintaining flank integrity. The tool’s green ring identification and universal geometry permit straightforward selection in mixed stockrooms and reduce sorting errors on fast‑moving shop floors.

Practical design for seamless machine integration

With a shank Ø 12 mm, the tap is easy to mount in standard collets and machine holders, providing secure clamping and concentricity for accurate threads. The universal profile and solid HSS‑Co material make it suitable for automated tapping cycles on machine spindles or tapping heads. Secondary benefits include improved cycle reliability and reduced tool inventory complexity thanks to the tap’s broad applicability and robust finish treatments.

Choose the TECWERK HSS‑Co universal machine tap for robust thread production and contact Metav Werkzeuge for tailored technical advice or to specify the item — email info@metav-werkzeuge.com or call +49 2822 7131930 to discuss suitability for particular materials or machines.

Technical data

• Article number: 2000867955NW
• Designation: Maschinengewindebohrer DIN 5156C Univ.G 3/8 Zollx19 HSS-Co vap.ISO 228 TECWERK
• Manufacturer: TECWERK
• Packaging unit: 1
• UID: 2000867955NW

Facts

• Shank Ø: 12 mm
• Thread: G 3/8" x 19
• Spiral angle: 40°

Special features

• HSS‑Co material
• Form C, universal type
• Vapour‑treated surface
• Green ring identification
• Right‑hand spiral 40°
• Flanks honed for improved finish
• Whitworth pipe thread G to DIN ISO 228
• For blind holes
• Suitable for steel, stainless steel, spheroidal cast iron and non‑ferrous metals

FAQ

What materials can this tap process effectively?
The Maschinengewindebohrer DIN 5156C Univ.G 3/8" x19 HSS‑Co from TECWERK is specified for steel, stainless steel, spheroidal cast iron and non‑ferrous metals, offering broad material compatibility for general shop use.

Is the thread standard compatible with BSPP fittings?
Yes, the tap produces a Whitworth G thread to DIN ISO 228, which corresponds to parallel pipe threads commonly used for BSPP connections and compatible sealing systems when fitted correctly.

How does the vapour treatment influence performance?
The vapour‑treated surface on the TECWERK tap reduces friction and improves wear resistance, which extends tool life and helps maintain thread quality during longer production runs.

Can this tap be used for blind holes on CNC machines?
The right‑hand spiral and 40° helix of the TECWERK machine tap are optimised for blind holes, improving chip evacuation and reducing the risk of breakage during CNC tapping cycles.

What clamping size is required for safe use?
The tap features a shank Ø 12 mm, allowing secure clamping in standard collets and holders; always ensure concentric chucking and correct axial alignment for best results.

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