G 1/4" x 19 Machine Tap HSS-Co Form C Nitride Vapourised Blue Ring Right-Hand 40° - TECWERK

Take advantage of the combination of high-performance HSS‑Co material, a Form C cutting geometry and a nitride plus vapour-treated surface for reliable threading in difficult-to-machine alloys; order the tool directly via Metav Werkzeuge or consult our specialists for application support.

TECWERK machine tap G 1/4" BSPP, HSS‑Co, Form C

The TECWERK machine tap G 1/4" is a precision pipe-thread tap for blind holes, designed for demanding stainless and heat-resistant steels

• High-performance HSS‑Co construction
• Suitable for blind hole threading
• Conforms to DIN ISO 228 BSPP standard
• Nitride and vapour-treated surface

Reliable performance in high-strength and stainless materials

The combination of HSS‑Co (cobalt high-speed steel) and Form C geometry ensures elevated wear resistance and toughness when machining alloys with high tensile strength. Built for hard-to-machine steels, the tool sustains cutting forces encountered in stainless, acid- and heat-resistant steels exceeding 850 N/mm². This translates into fewer tap breakages and more consistent thread quality in series production, reducing downtime and improving process stability. The design focuses on efficiency and repeatability rather than occasional hobby use.

Precision threading to recognised standards for consistent assembly

Engineered for BSPP G 1/4" (Whitworth pipe thread) in accordance with DIN ISO 228, the profile and pitch deliver threads that mate reliably with standard fittings. The specification of 19 tpi (threads per inch) provides the correct pitch for traditional pipe connections, enabling predictable sealing behaviour when combined with appropriate sealing methods. Using a standard-compliant tap simplifies quality control and supports interchangeability across suppliers and assemblies.

Surface treatment and geometry for better chip control and tool life

The tool is nitride and vapour-treated, offering a vaporised finish that improves surface hardness and reduces friction at the cutting edges. The right-hand helix 40° and flank relief reduce cutting forces and promote chip formation suitable for blind holes, helping to avoid chip packing at the bottom of the hole. These features together extend service life and reduce the frequency of tool changes, which supports leaner machining processes and lower overall tooling costs.

Designed for machine operation and straightforward integration

With a shaft Ø 11 mm the tap fits common collets and holders used in machining centres and tapping heads, allowing immediate integration into established production setups. The geometry is optimised for machine tapping in confined situations such as blind holes, where controlled chip evacuation and consistent torque behaviour are essential. Supplied as a single unit, the component is ready for insertion into production workflows and for use in repeatable, traceable operations.

For specialised advice on using the TECWERK machine tap in demanding stainless or heat-resistant steels, contact Metav Werkzeuge at info@metav-werkzeuge.com or call +49 2822 7131930 to discuss suitability and supply options.

Technical data

• Article number: 2000867567NW
• Product designation: TECWERK machine tap G 1/4" BSPP HSS‑Co
• Manufacturer: TECWERK

Facts

• Shaft diameter: 11 mm
• Threads per inch: 19 tpi
• Packaging unit: 1 piece

Special features

• Material: HSS‑Co (cobalt high-speed steel)
• Type: Form C, VA
• Surface: nitride and vapour-treated (vaporised finish)
• Identification: blue ring
• Geometry: right-hand helix 40°, flanks relieved
• Thread: BSPP (Whitworth pipe thread) G 1/4" to DIN ISO 228
• Application: blind hole threading
• Suitable for: stainless, acid- and heat-resistant steels > 850 N/mm²

FAQ

What materials is this tap designed for?
The TECWERK machine tap (SKU 2000867567NW) is designed for hard-to-machine materials, notably stainless and heat-resistant steels with tensile strengths above 850 N/mm².

Can this tap be used for through holes as well as blind holes?
The geometry and chip control are optimised for blind hole threading, though it will cut through holes; care is needed with chip evacuation when used for through threading.

Which thread standard does the tap follow?
The tap produces a BSPP (Whitworth) G 1/4" thread in compliance with DIN ISO 228, providing compatibility with standard pipe fittings.

What benefits does the nitride and vapour-treated surface provide?
The nitride and vapour-treated finish increases surface hardness and reduces friction, improving wear resistance and extending tool life under demanding conditions.

What machine interface does the tap require?
The tool has a shaft Ø 11 mm, compatible with common collets and tapping heads found in machining centres; adapt the holder as per machine manufacturer recommendations.

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