M3x0.5mm Machine Tap DIN 371C HSS Form C Right-Hand 35° Undercut Flanks ISO2 6H - Ruko GmbH

Benefit from HSS construction, ISO2 (6H) tolerance and a 35° right-hand helix for dependable blind-hole metric threads — order the Machine tap DIN 371C M3 x 0.5 mm HSS 6H (RUKO) directly via Metav Werkzeuge or ask our consultants for tailored advice.

Machine tap DIN 371C M3 x 0.5 mm HSS 6H – RUKO (35° helix, blind-hole)

The Machine tap DIN 371C M3 x 0.5 mm HSS 6H (RUKO) is a high-speed steel machine tap engineered for cutting metric ISO threads in blind-hole applications across general workshop and light industrial environments.

• HSS Form C construction
• 35° right-hand helix
• ISO2 (6H) tolerance field
• Suitable for blind-hole threads

Increased productivity through precise metric threading

The RUKO machine tap delivers a reliable combination of hard-wearing HSS and a standardised thread form, enabling consistent creation of M3 x 0.5 mm metric threads to DIN 13 Part 1. The tool’s ISO2 (6H) tolerance ensures repeatable fit and interchangeability with mating components, reducing rework and inspection effort. For production and maintenance workflows that prioritise throughput, the tap’s geometry supports efficient cycle times while maintaining thread quality.

Cleaner chips and safer blind-hole threading

Designed with a 35° helix and relief-ground flanks, the tap improves chip control in confined bores and lowers the risk of chip jamming during blind-hole operations. The right-hand cut and helix angle favour axial chip evacuation and smoother cutting action, which benefits thread form and surface finish. Where access is limited, this geometry reduces the likelihood of thread damage and shortens rework intervals, making the tool well suited to small-bore, precision assemblies.

Robust material capability and easy toolholder integration

Manufactured in HSS and supplied in Form C, the tap is specified for machining unalloyed and low-alloy steels up to 800 N/mm², as well as malleable cast iron and non-ferrous metals, offering flexible application across workshop tasks. The shank 3.5 mm diameter provides secure clamping in standard toolholders, supporting stable rotation and consistent thread pitch generation. Conformity with metric ISO standards simplifies process planning and inventory management in mixed-production environments.

Request a technical consultation or place an order for RUKO machine taps with Metav Werkzeuge — fast supply from Emmerich and expert advice available upon request

Technical Data

• Article number: 4000601960NW
• Product: Machine tap DIN 371C M3 x 0.5 mm HSS 6H RUKO
• Manufacturer: Ruko GmbH
• Packaging unit: 1

Facts

• Thread size: M3 x 0.5 mm
• Shank Ø: 3.5 mm
• Helix angle: 35°
• Tolerance field: ISO2 (6H)
• Cutting direction: right-hand
• Application: blind-hole threads

Special features

• Material: HSS
• Form: C
• Flanks relief-ground
• Standard: DIN 13 Part 1
• Suitable for unalloyed and low-alloy steels up to 800 N/mm²
• Suitable for malleable cast iron and non-ferrous metals

FAQ

Is this tap suitable for blind-hole threading?
The Machine tap DIN 371C M3 x 0.5 mm HSS 6H (RUKO, SKU 4000601960NW) is specifically designed for blind-hole threads thanks to its 35° helix and relief-ground flanks, which aid chip control in confined bores.

Which materials can be machined with this tap?
This RUKO machine tap is suitable for unalloyed and low-alloy steels up to 800 N/mm², malleable cast iron and various non-ferrous metals, as stated in the product specification.

What tolerance and standard does the tap meet?
Threads produced with this tool conform to DIN 13 Part 1 and the tap is manufactured to the ISO2 (6H) tolerance field for consistent thread fits.

What is the shank diameter for clamping?
The tap has a shank diameter of 3.5 mm, enabling secure clamping in standard small-tool holders for stable machining.

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