G 1/2" x 14 Tpi Machine Tap HSS-Co Nitride Vaporised Blue Ring Right-Hand 40° - TECWERK

Benefit from durable cutting performance and reliable thread form from a combination of HSS‑Co construction, a vaporised and nitride finish, and a right‑hand 40° spiral geometry; order the tap directly via Metav Werkzeuge or consult the Metav team for material‑specific guidance.

Machine Tap DIN 5156C VA G 1/2" x14 (HSS‑Co, vaporised) – TECWERK

The Machine Tap DIN 5156C VA G 1/2" x14 is a spiral machine tap designed to cut Whitworth pipe threads (G) in blind holes and to perform in hard‑to‑machine, corrosion‑resistant steels and heat‑resistant alloys

• HSS‑Co construction for high wear resistance
• Vaporised and nitride surface finish
• Right‑hand 40° spiral for efficient chip evacuation
• Designed for Whitworth pipe thread G 1/2" x14

Proven performance for demanding materials

This spiral machine tap combines HSS‑Co substrate hardness with a vaporised and nitride surface treatment to extend tool life when machining difficult alloys. The cobalt‑enriched high‑speed steel provides increased hot hardness and improved wear resistance compared with standard HSS; this makes the tool suitable for corrosion‑resistant and heat‑resistant steels with tensile strengths above 850 N/mm². The result is consistent thread geometry and longer intervals between tool changes, which contributes to reduced production interruptions and lower per‑part machining costs.

Accurate pipe threads and reliable blind‑hole tapping

The geometry conforms to DIN ISO 228 for Whitworth pipe threads and is optimised for blind‑hole applications. A flank relief ground on each thread flank ensures clean thread form and reduced friction during thread generation, which improves assembly fit and sealing performance in downstream processes. The combination of G 1/2" x14 thread form and precise flank grinding reduces rework and ensures predictable torque values during assembly, supporting both quality assurance and process reproducibility on the shop floor.

Geometry and surface finish that keep production moving

A right‑hand 40° spiral with chip‑control features evacuates chips effectively from blind holes, lowering the risk of clogging and breakage. The shank is sized at 16 mm for secure clamping in machines and adapters, while the visible blue ring facilitates quick identification in tool racks. The vapour‑treated surface provides improved sliding behaviour and resistance to built‑up edge formation, which, combined with the spiral flute and ground flanks, promotes steady cutting action and predictable tool life. For complex workpieces or mixed batch production, the tap’s robust design offers a balance of performance and serviceability, with Metav’s specialists available for technical clarification if required.

Contact Metav Werkzeuge for tailored application support or to request material‑specific recommendations and availability; phone +49 2822 7131930 or e‑mail info@metav-werkzeuge.com

Technical data

• Article number: 2000867569NW
• SKU / UID: 2000867569NW
• Designation: Machine Tap DIN 5156C VA G 1/2" x14 HSS‑Co vaporised (TECWERK)
• Manufacturer brand: TECWERK
• Packing unit: 1

Facts

• Shank diameter: 16 mm
• Thread form: G 1/2" x14 (Whitworth pipe thread)
• Spiral helix: 40° right‑hand
• Capability: for blind‑hole tapping
• Suitable tensile strength: > 850 N/mm²

Special features

• Material: HSS‑Co (cobalt high‑speed steel)
• Type: Form C, VA variant
• Surface: nitride and vaporised finish
• Flank relief: ground for precise thread form
• Identification: blue ring
• Standard: DIN ISO 228
• Application focus: hard‑to‑machine and corrosion‑resistant steels

FAQ

What materials can this tap machine effectively cut?
The machine tap is specified for hard‑to‑machine and corrosion‑resistant steels, including heat‑resistant grades with tensile strengths above 850 N/mm²; the HSS‑Co substrate and surface treatments support these applications.

Is the thread form suitable for sealing applications?
Yes. The tap produces G (Whitworth pipe) threads to DIN ISO 228, delivering consistent flank geometry and surface quality that aid sealing when combined with appropriate assembly procedures.

Can the tap be used in blind‑hole operations without special chip extraction?
The right‑hand 40° spiral and flute geometry are designed to evacuate chips from blind holes efficiently, reducing clogging and the likelihood of tool failure during blind‑hole tapping.

What clamping size is required for this tap?
A shank diameter of 16 mm is provided for secure machine clamping; compatibility with standard holders and adaptors should be verified before use.

Does the surface treatment improve tool life?
The combined nitride and vaporised surface finish reduces friction and built‑up edge formation, which typically results in longer tool life and more predictable wear behaviour in demanding materials.

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