G 3/4" x 14 HSS-Co Machine Tap Form C Nitrided Vapourised 40° Right-Hand Helix Whitworth Tube Thread DIN ISO 228 For Blind Holes - TECWERK

Take advantage of a robust combination of HSS‑Co material and a vapour‑finished, nitrided surface for reliable pipe-thread production in demanding materials; order the TECWERK machine tap via Metav Werkzeuge or consult the team for tailored machining advice.

Machine thread tap DIN 5156C VA G 3/4 in x 14 HSS‑Co vapour‑finished (ISO 228) — TECWERK

The Machine thread tap DIN 5156C VA G 3/4 in x 14 HSS‑Co is engineered to cut Whitworth pipe (G) threads in blind holes and to perform reliably on stainless and heat‑resistant steels

• HSS‑Co alloy for high wear resistance
• Designed for blind holes (BSPP G threads)
• Vapour‑finished and nitrided for long life
• 40° right‑hand spiral with ground flanks

Consistent threads in hard‑to‑machine alloys

Manufactured from HSS‑Co, this machine tap delivers dependable cutting performance where ordinary high‑speed tools struggle. The tool is specified for pipe threads to DIN ISO 228, producing Whitworth (G) form threads at G 3/4 in x 14 tpi, which are common in hydraulic and fluid‑transfer assemblies. The combination of a cobalt‑enriched high‑speed steel and an optimised geometry reduces flank wear and helps maintain thread accuracy over extended batch runs. For operations that require repeatable results in stainless, acid‑ and heat‑resistant steels and other difficult‑to‑cut materials, the physical composition of the tool provides measurable gains in process stability and reduces scrap rates.

Surface engineering and flute geometry for extended uptime

A nitrided core and vapour‑finished surface treatment enhance resistance to abrasion and adhesive wear; the vapour finish also improves chip evacuation and reduces built‑up edge formation. The tool’s 40° right‑hand spiral flutes promote axial chip removal, which is particularly beneficial when producing threads in blind holes, and the ground flanks ensure precise thread form and easier thread engagement. These engineered features translate into fewer tool changes, longer intervals between regrinds and improved cycle‑time consistency on CNC and automatic tapping heads.

Secure clamping and process reliability

A substantial 20 mm shank diameter provides robust clamping and minimises vibration, which supports accurate thread lead and surface quality. The tap’s design for blind‑hole tapping helps prevent premature chip packing when the bore depth approaches the minor diameter; combined with the spiral flute angle and surface treatment, this leads to fewer tap breakages and less operator intervention. Where component integrity and leak‑tight joints are a priority, using a purpose‑designed machine tap like this reduces the need for subsequent corrective machining or additional inspection cycles.

Procurement confidence and workshop support from Metav

Sourcing this TECWERK tap through Metav Werkzeuge gives access to a broad range of precision tools and a supply chain geared to workshop continuity. Metav’s European hub functions as a quality filter, combining a wide assortment of products with rapid, transparent order processing from Emmerich. That reliability supports planning for maintenance windows and production schedules, so delivery and spare‑part availability become part of the machining strategy rather than a risk factor.

For professional procurement of the TECWERK machine thread tap and application guidance, contact Metav Werkzeuge in Emmerich at info@metav-werkzeuge.com or call +49 2822 7131930 to discuss machining parameters, delivery options and part availability.

Technical data

• Article number: 2000867571NW
• Brand: TECWERK
• Packaging unit: 1

Facts

• Thread form: G 3/4 in x 14 tpi (Whitworth, per DIN ISO 228)
• Shank diameter: 20 mm
• Spiral angle: 40° right‑hand

Special features

• Material: HSS‑Co (cobalt high‑speed steel)
• Form: C, Type VA
• Surface: nitrided and vapour‑finished
• Flutes: right‑hand spiral, flanks ground
• Application: blind‑hole tapping
• Suitable for: stainless, acid‑ and heat‑resistant steels and other hard‑to‑machine materials (> 850 N/mm² tensile strength)
• Surface quality designation: vapour‑finished
• Colour marker: blue ring

FAQ

What thread standard does this tap produce?
This tap produces Whitworth pipe threads (G) in accordance with DIN ISO 228, specified here as G 3/4 in x 14 tpi for the TECWERK machine tap.

Is the tool suitable for stainless and heat‑resistant steels?
Yes, the HSS‑Co composition and surface treatment make the tool suitable for hard‑to‑machine materials such as stainless and heat‑resistant steels with tensile strengths above 850 N/mm².

Can this tap be used for blind holes?
The tool is designed specifically for blind‑hole tapping; the 40° spiral flutes and vapour‑finished surface aid chip evacuation in restricted depths.

What are the benefits of the nitrided and vapour‑finished surface?
Nitriding increases surface hardness and wear resistance, while the vapour‑finished treatment improves chip flow and reduces adhesive wear, extending tool life for the TECWERK tap.

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