M3x0.5mm Machine Tap DIN 371B HSS-Co5 Form B Straight Flute 6H ISO2 With Chamfer - Ruko GmbH

Take advantage of the HSS‑Co5 construction, Form B straight flutes and the ISO thread tolerance for consistent, high‑quality threads; order directly via Metav Werkzeuge or consult our specialists for application advice.

Machine tap DIN 371B M3 x 0.5 HSS‑Co5 6H — RUKO

A machine tap designed for producing ISO metric threads in steels, cast iron and non‑ferrous metals, optimised for through‑hole and general machine tapping applications

• HSS‑Co5 high‑cobalt steel
• Form B straight flutes
• Metric thread M3×0.5, tolerance 6H
• Suitable for steels up to 1,000 N/mm²

Durable high‑cobalt construction for demanding production

The HSS‑Co5 alloy delivers elevated heat and wear resistance compared with standard high‑speed steels, which is beneficial during continuous tapping cycles and higher cutting loads. The Form B geometry with straight flutes and flank relief concentrates cutting forces on the leading edges and reduces friction, helping to preserve thread geometry over many operations. This results in longer tool life and fewer interruptions to production, supporting steady workflow and reduced tooling costs.

Precision fit and dependable chip control in through holes

Designed to produce an ISO metric thread to DIN specifications with 6H tolerance, the tap ensures a reproducible fit for mating components, minimising assembly rework. The integrated peeling chamfer for through threads aids controlled chip formation and evacuation when tapping through holes, lowering the risk of clogging and damaged threads. Suitable for unalloyed and alloyed steels, temper cast iron and non‑ferrous metals, the tool balances cutting performance and surface finish to reduce post‑process corrections.

Machine‑ready dimensions and workshop compatibility

Built to DIN 371B geometry with a compact shank Ø 3.5 mm, the tap is compatible with common collet and chuck systems used in production machines and automatic tapping units. The right‑hand cutting orientation matches standard machine setups, while the modest shank diameter facilitates access in confined fixtures and jigs. Routine inspection and replacement are straightforward, and the robust construction supports predictable maintenance intervals for uninterrupted machining.

For procurement and technical guidance on RUKO machine taps, contact Metav Werkzeuge in Emmerich at info@metav-werkzeuge.com or +49 2822 7131930 to ensure the right specification and reliable supply

Technical data

• Article number: 4000601921NW
• Product: Machine tap DIN 371B M3 x 0.5 HSS‑Co5 6H RUKO
• Manufacturer: Ruko GmbH
• Packaging unit: 1

Facts

• Thread size: M3 x 0.5
• Shank Ø: 3.5 mm
• Applicable tensile strength: up to 1,000 N/mm²
• Tolerance: 6H
• Standard: DIN 13 Blatt 1
• Cutting direction: right‑hand

Special features

• HSS‑Co5 material
• Form B straight flutes
• Flank relief ground
• Peeling chamfer for through threads
• Suitable for unalloyed and alloyed steels, temper cast iron and non‑ferrous metals

FAQ

Which materials can be machined with this tap?
The RUKO machine tap is suitable for unalloyed and alloyed steels up to 1,000 N/mm², temper cast iron and a range of non‑ferrous metals.

What thread form and tolerance does the tool produce?
It produces an ISO metric thread M3 x 0.5 to DIN specifications with a tolerance field of 6H, ensuring a consistent fit for assembly.

Is this tap recommended for through‑hole tapping?
Yes — the tool includes a peeling chamfer designed specifically to improve chip control and evacuation for through threads.

What shank size is required for clamping?
The tap features a shank diameter of 3.5 mm, compatible with standard collet and small‑diameter chuck systems.

Which standard does the tap conform to?
Geometry follows DIN 371B and the thread form aligns with DIN 13 Blatt 1 for metric ISO threads.

Manufacturer/Responsible: Ruko GmbH Präzisionswerkzeuge, Robert‑Bosch‑Strasse 7, 71088 Holzgerlingen