3/8" G 19 HSS-Co Machine Tap DIN ISO 228 Nitride Vaporised Straight Flute - TECWERK

Benefit from the combination of durable HSS‑Co construction, a nitrided and vapour‑treated surface and a straight‑fluted geometry that delivers consistent Whitworth pipe threads; order the TECWERK machine pipe thread tap via Metav Werkzeuge or consult our specialists for application advice.

TECWERK machine pipe thread tap G 3/8" x 19 — HSS‑Co, vapour‑treated (DIN 5156B)

The TECWERK machine pipe thread tap G 3/8" x 19 is a high‑performance tool for producing parallel Whitworth pipe threads to DIN ISO 228 in through‑hole applications, designed for demanding, hard‑to‑machine materials.

• HSS‑Co for enhanced heat resistance
• Nitrided and vapour‑treated surface
• Straight flutes with flank relief
• Whitworth G 3/8" to DIN ISO 228

Long life and consistent thread quality for demanding production

Constructed from HSS‑Co, this machine tap combines cobalt‑alloyed high‑speed steel with surface hardening to resist heat and wear during continuous operation. The nitrided and vapour‑treated finish reduces friction and improves surface hardness, which translates into extended tool life and fewer tool changes on the shop floor. For production environments machining high‑strength workpieces, the result is a noticeable reduction in downtime and a stable thread geometry across long runs.

Geometry that reduces forces and secures thread form

The straight‑fluted design, together with flank relief, ensures controlled chip formation and reliable evacuation in through‑threading. Straight flutes are particularly effective for producing parallel pipe threads where spiral taps could distort the profile; the flank relief minimises contact on the thread flanks during cutting, lowering torque and the risk of seizure in tough materials. These features support repeatable process parameters and reduce the need for rework after tapping.

Standards, compatibility and intended applications

Engineered for Whitworth G pipe threads to DIN ISO 228, this tap is specified as Type B in DIN 5156B, with a nominal thread size of G 3/8" x 19 and a 12 mm shank for use with standard machine holders. It is intended for through‑threads and is suitable for hard‑to‑machine materials, including stainless, acid‑ and heat‑resistant steels with tensile strengths above 850 N/mm². The characteristic blue ring marking and vapourised surface finish make identification and handling straightforward in mixed‑tool environments.

Purchase the TECWERK tap through Metav Werkzeuge for reliable supply from Emmerich and precise application support; for technical queries contact Metav Werkzeuge at info@metav-werkzeuge.com or +49 2822 7131930

Technical data

• Article number: 2000867495NW
• Designation: Machine pipe thread tap, DIN 5156B VA, G 3/8" x 19, HSS‑Co, vapour‑treated
• Manufacturer: TECWERK

Core specifications

• Thread size: G 3/8" x 19 (Whitworth, 19 tpi)
• Shank diameter: 12 mm
• For through‑threads

Special features

• HSS‑Co material
• Form B / Type VA
• Nitrided and vapour‑treated surface
• Blue ring identification
• Straight flutes
• Flank relief ground
• Surface finish: vapourised
• Suitable for hard‑to‑machine materials (e.g. stainless and heat‑resistant steels > 850 N/mm²)

FAQ

What thread standard does this tap produce?
The tap produces Whitworth parallel pipe threads to DIN ISO 228; the designation is G 3/8" x 19.

Which materials is the TECWERK tap suitable for?
This TECWERK machine tap is intended for hard‑to‑machine materials, such as stainless, acid‑ and heat‑resistant steels with tensile strength above 850 N/mm².

Can this tap be used for blind holes?
The tool is specified for through‑threads; for blind‑hole applications a different flute geometry is normally recommended.

What benefits does the vapour‑treated and nitrided finish provide?
The nitrided and vapour‑treated surface increases wear resistance and reduces friction, extending tool life and improving thread quality in continuous production.

What machine connection is required for the tool?
The tap has a 12 mm shank and is intended for use with standard machine holders that accept this diameter; it conforms to DIN 5156B specifications.

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