M6x1mm Machine Tap DIN 371C HSS-Co5 Form C Right-Hand Thread 35° For Blind Holes ISO2 (6H) - Ruko GmbH

Take advantage of the combination of high-temperature resistance, reliable chip control and ISO interchangeability for consistent, production-ready threads; order the tool directly via Metav Werkzeuge or consult our specialists for application support.

Machine tap DIN 371C M6×1.0 HSS‑Co5 6H (RUKO) — spiral flute, right-hand 35°

The Machine tap DIN 371C M6×1.0 HSS‑Co5 6H (RUKO) is a spiral-form machine tap designed for producing metric ISO threads in blind holes and a range of workshop materials.

• HSS‑Co5 for high wear resistance
• Spiral flute, right‑hand 35° geometry
• ISO metric thread M6 x 1.0, tolerance 6H
• Suitable for blind holes; steels up to 1000 N/mm²

Precision threading that meets production tolerances

The combination of DIN 371C geometry and the 6H tolerance field ensures threads are produced to consistent, repeatable measures suitable for serial production. Manufactured from HSS‑Co5, the tool maintains cutting edge integrity at elevated temperatures, which reduces rework and improves first‑pass yields. Specified as M6×1.0, the thread form adheres to DIN 13 sheet 1, giving compatibility with standard fasteners and enabling straightforward component interchangeability in assemblies.

Efficient chip control for safer blind-hole operations

The spiral flute with a 35° helix directs chips back into the flutes rather than into the hole bottom, which significantly lowers the risk of chip congestion when working in blind holes. Combined with flanks back-off ground, the geometry reduces thread jamming and tap breakage, allowing smoother tapping cycles and fewer stoppages. This design is particularly beneficial for workshops where minimising downtime and tool changeovers directly improves throughput and operator confidence.

Versatile performance across common workshop materials

This threading tool is specified for use in unalloyed and alloyed steels up to 1000 N/mm², as well as malleable cast iron and non‑ferrous metals, making it suitable for a broad range of components. The cobalt‑enriched steel grade enhances hot hardness and wear resistance, extending tool life under mixed production loads. For procurement and process planning, this versatility supports fewer tool variants and simpler inventory control while still covering typical job‑shop and light industrial demands.

Workshop-ready design for straightforward integration

With a shank Ø 6 mm and right‑hand cutting orientation, the tap integrates easily into standard collets and holders used on tapping spindles and CNC machines. The tool’s nominal dimensions and compliance with ISO metric threads simplify setup and reduce fixturing complexity. As a result, setup times are shortened and personnel can focus on value‑adding tasks instead of repeated adjustments, supporting leaner workflows and reliable cycle times.

For precise metric tapping with RUKO reliability, contact Metav Werkzeuge for tailored advice or to secure stock — phone +49 2822 7131930 or email info@metav-werkzeuge.com

Technical Data

• Article number: 4000601996NW
• Label: Maschinengewindebohrer DIN 371C M6x1mm HSS-Co5 6H RUKO
• Manufacturer: Ruko GmbH
• Packaging unit: 1
• UID: 4000601996NW

Facts

• Thread: M6 x 1.0
• Tolerance field: ISO2 (6H)
• Shank diameter: 6 mm
• Spiral angle: 35°
• Max workpiece tensile strength: 1000 N/mm²

Special features

• Material: HSS‑Co5
• Form C
• Right‑hand spiral flute
• Flanks back‑off ground
• Standard: DIN 371C; DIN 13 sheet 1
• For blind holes
• Suitable for unalloyed and alloyed steels, malleable cast iron and non‑ferrous metals
• Cutting direction: right‑hand cutting

FAQ

Which materials can be machined with this tap?
The Machine tap DIN 371C M6×1.0 HSS‑Co5 6H (RUKO) is suitable for unalloyed and alloyed steels up to 1000 N/mm², malleable cast iron and non‑ferrous metals.

Is this tool suitable for blind‑hole tapping?
Yes, the spiral flute and 35° helix are designed specifically to evacuate chips from blind holes and to reduce the risk of chip build‑up.

What tolerance and thread standard does the tap produce?
The tap produces an ISO metric thread M6 x 1.0 to ISO2 (6H) tolerance and conforms to DIN 371C and DIN 13 sheet 1 standards.

What shank size and cutting direction are required?
The tool has a shank Ø 6 mm and uses right‑hand cutting, making it compatible with standard collets and tapping spindles.

What is the benefit of HSS‑Co5 for this application?
The cobalt‑enriched HSS‑Co5 improves hot hardness and wear resistance, extending tool life under demanding cutting conditions.

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