M3 x 0.5mm Machine Tap HSS-Co5 Form C Right-Hand 6H For Blind Holes - Ruko GmbH

High-performance HSS‑Co5 construction and ISO2 (6H) tolerance provide reliable, repeatable M3 internal threads; the Form C geometry with a 35° right‑hand spiral is optimised for blind‑hole tapping. Order the RUKO M3 machine tap directly via Metav Werkzeuge or consult the Metav advisers for technical clarification.

RUKO machine tap DIN 371C M3 x 0.5 mm — HSS‑Co5, ISO2 (6H)

The RUKO machine tap DIN 371C M3 x 0.5 mm is a cobalt‑alloy high‑speed steel tap designed to produce precise metric internal threads in blind holes for industrial and workshop machining applications

• HSS‑Co5 for enhanced wear resistance
• 35° right‑hand spiral for blind holes
• ISO2 (6H) tolerance for precise metric threads

Consistent thread quality for critical assemblies

Manufactured from HSS‑Co5, this machine tap delivers improved heat resistance and longer service life compared with standard high‑speed steels. The tool conforms to DIN 13 Blatt 1 and produces M3 x 0.5 mm metric threads to ISO2 (6H) tolerance, which reduces rework and ensures interchangeability in assemblies where thread accuracy matters. For procurement and process planning, the combination of material choice and tolerance class offers measurable benefits in repeatability and reduced reject rates.

Designed for blind‑hole applications and mixed materials

The tap’s Form C geometry and 35° right‑hand spiral are intended for blind‑hole threading: the helix promotes controlled chip evacuation from the bottom of the hole and lowers the risk of chip packing. This geometry, together with the tool’s cutting orientation and relief‑ground flanks, makes it suitable for machining unalloyed and alloy steels up to 1000 N/mm², temper castings and a range of non‑ferrous metals, allowing a single tool to cover a broad set of workshop tasks while maintaining surface finish and thread integrity.

Stable clamping and machine compatibility for efficient production

A 3.5 mm shank diameter and relief‑ground flanks provide secure clamping and reduced vibration during machine tapping, contributing to consistent thread form and extended tool life. The right‑hand cutting direction matches standard spindle rotation, simplifying integration into automatic tapping cycles. For production environments seeking predictable cycle times and less downtime, this tap balances robustness and precision, offering a practical solution for small to medium‑batch machining operations.

Order genuine RUKO machine taps through Metav Werkzeuge for assured delivery from Emmerich; contact info@metav-werkzeuge.com or call +49 2822 7131930 for specification advice and fast dispatch

Technical Data

• Article number: 4000601993NW
• Description: Machine tap DIN 371C M3 x 0.5 mm HSS‑Co5 6H RUKO
• Manufacturer: Ruko GmbH
• Packaging unit: 1

Core specifications

• Thread: M3 x 0.5 mm
• Shank diameter: 3.5 mm
• Helix angle: 35°
• Tolerance: ISO2 (6H)
• Material strength suitability: up to 1000 N/mm²

Special features

• Material: HSS‑Co5
• Form C geometry
• Right‑hand spiral and right‑hand cutting
• Relief‑ground flanks
• For blind‑hole threads
• Conforms to DIN 13 Blatt 1
• Suitable for unalloyed and alloy steels, temper cast iron, non‑ferrous metals

FAQ

What materials can this tap machine thread?
The RUKO machine tap DIN 371C M3 x 0.5 mm (SKU 4000601993NW) is suitable for unalloyed and alloy steels up to 1000 N/mm², temper cast iron and various non‑ferrous metals.

Is this tap intended for blind‑hole threading?
Yes. The Form C geometry and 35° right‑hand spiral of the RUKO tap are designed specifically to improve chip evacuation in blind‑hole applications.

What does ISO2 (6H) tolerance guarantee?
ISO2 (6H) indicates a standard internal thread tolerance class for metric threads, ensuring the RUKO tap produces threads with consistent fit and interchangeability according to DIN standards.

Can the tap be used in machine tapping cycles?
The RUKO machine tap is a machine tap with a 3.5 mm shank and right‑hand cutting, suitable for integration into standard machine tapping operations.

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