G 1/8" x 28 HSS-Co Machine Tap Form C Nitride Vaporised 40° Right-Hand Flute Whitworth Thread DIN ISO 228 - TECWERK

Benefit from robust HSS‑Co construction and a nitride with vapourised finish that extend tool life when tapping hard‑to‑machine, corrosion‑resistant steels; precise Whitworth pipe thread geometry ensures reliable sealing in blind‑hole applications. Order directly via Metav Werkzeuge or contact our consultants for tailored advice.

Machine tap DIN 5156C VA – Whitworth G 1/8" x 28, HSS‑Co (TECWERK)

The Machine tap DIN 5156C VA G 1/8" x 28 HSS‑Co is a nitride and vapour‑finished tap for producing Whitworth pipe threads in blind holes, engineered for stainless and heat‑resistant steels in industrial workshops.

• HSS‑Co; nitride and vapourised finish
• Whitworth pipe thread G 1/8" x 28
• For blind holes in hard‑to‑machine steels
• 7 mm shank with 40° right‑hand spiral

Consistent threads in demanding materials

This tap delivers repeatable, leak‑tight Whitworth pipe threads even in materials that challenge conventional tools. Made from HSS‑Co, the tool combines toughness with hot‑hardness, allowing steady cutting in stainless, acid‑ and heat‑resistant steels with tensile strengths above 850 N/mm². The Form C geometry and undercut flanks reduce cutting forces and chip congestion, which helps maintain thread form and increases the uptime of machining cycles. This yields predictable results and supports efficient production planning.

Surface treatment and geometry that extend service life

A nitrided and vapourised surface finish improves wear resistance and reduces friction during engagement, while the visible blue ring aids fast identification in tool sets. The 40° right‑hand spiral promotes reliable chip evacuation in blind‑hole tapping and reduces the risk of chip packing at the thread root. Together these features lower tool wear and reduce the frequency of tool changes, which can make a measurable difference to throughput in repetitive operations.

Purpose‑built for pipe threads and blind‑hole applications

Engineered specifically for Whitworth pipe threads (G) in accordance with DIN ISO 228, the cutter produces the required thread form for sealing applications. The design is optimised for blind holes, with flute geometry and chip control that minimise the likelihood of chip jamming. For workshops producing fittings or components that require sealed joints, the result is robust, serviceable threads that meet industrial tightening and sealing demands without excessive rework.

Machine compatibility and handling advantages

A 7 mm shank provides straightforward mounting in common tapping holders and machines, while the tool’s overall form factor supports automated and manual tapping operations. Markings and the vapourised finish make inventory handling and tool selection simple in busy environments. The combination of high‑performance substrate, advanced surface treatment and tailored geometry offers a balance of precision and longevity, reducing downtime and improving the cost‑efficiency of thread production.

Contact Metav Werkzeuge for procurement and technical guidance on TECWERK tapping solutions; secure supply direct from Emmerich—email info@metav-werkzeuge.com or call +49 2822 7131930

Technical Data

• Article number: 2000867566NW
• SKU: 2000867566NW
• Brand: TECWERK
• Packaging unit: 1

Facts

• Shank diameter: 7 mm
• Thread form: Whitworth pipe thread G 1/8" x 28 (28 TPI)
• Standard: DIN ISO 228

Special features

• Material: HSS‑Co
• Form: DIN 5156C (Form C)
• Type: VA (stainless variant)
• Coating/finish: nitrided and vapourised
• Marking: blue ring
• Spiral: 40° right‑hand spiral
• Flank: undercut flanks
• Application: blind‑hole threads
• Suitable for: hard‑to‑machine, stainless, acid‑ and heat‑resistant steels > 850 N/mm²
• Surface quality: vapourised

FAQ

What materials can be machined with this tap?
This TECWERK machine tap is designed for hard‑to‑machine materials, specifically stainless, acid‑ and heat‑resistant steels with tensile strengths above 850 N/mm².

Is the tap suitable for blind‑hole pipe threads?
Yes, the tap is optimised for blind‑hole Whitworth pipe threads (G) and features flute and spiral geometry intended to reduce chip packing during blind‑hole tapping.

Which standard does the thread conform to?
Threads produced with this tap conform to DIN ISO 228 for Whitworth pipe threads (G), ensuring compatibility with standard pipe fittings.

How is the tool surface treated to improve performance?
The tool has a nitrided and vapourised finish that increases wear resistance and reduces friction, contributing to longer tool life and more consistent thread quality.

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