M5x0.8mm Machine Tap DIN 371B HSS-Co5 ISO Metric 6H Through Tap Straight Flute - Ruko GmbH

Benefit from a high‑precision thread making solution that combines HSS‑Co5 robustness with DIN‑standard accuracy and a through‑hole chamfer for clean exits; the result is consistent M5 threads with dependable repeatability. Order the tool directly via Metav Werkzeuge or consult the specialists for tailored advice.

RUKO Machine Tap DIN 371B M5 x 0.8 (HSS‑Co5, 6H)

RUKO Machine Tap DIN 371B M5 x 0.8 for efficient production of ISO metric threads in steels, cast iron and non‑ferrous metals

• HSS‑Co5 high‑speed cobalt construction
• Form B straight flutes for chip control
• ISO metric thread M5 x 0.8, tolerance 6H
• Shank Ø 6 mm, right‑hand cutting

Precision threading for reliable assemblies

The RUKO machine tap DIN 371B M5 x 0.8 is manufactured from HSS‑Co5, a cobalt‑alloyed high‑speed steel that sustains sharp cutting edges under load and heat. The manufacture to DIN 371B and the 6H tolerance (ISO2) ensures threads meet established fits for fasteners, reducing variability across batches. For production environments this translates into fewer rejects, consistent torque behaviour and predictable assembly performance — advantages that pay off over repeated cycles.

Robust geometry designed to keep production moving

The tool’s Form B geometry with straight flutes is optimised for through‑hole tapping: flutes guide chips safely away from the cutting edge and the through‑hole chamfer reduces exit burrs. The shank Ø 6 mm suits standard collets and holders while right‑hand cutting matches most machine spindle conventions. Together these features lower cycle interruptions, extend tool life and simplify integration into automated tapping heads, creating measurable uptime benefits on the shop floor.

Clear material suitability and standards compliance

Designed for a broad range of workpiece materials, the tap is suitable for unalloyed and alloyed steels, temper cast iron and a variety of non‑ferrous metals up to 1000 N/mm² tensile strength. Conformance to ISO metric thread specifications and DIN 13 Blatt 1 provides compatibility with standard fasteners and gauge checks, enabling straightforward quality control. The combination of material selection and standard conformity supports both repair work and serial production where interchangeability is essential.

Practical advantages that reduce rework and downtime

The relieved flanks and precise chamfer assist in producing clean thread starts and exits, which reduces the need for subsequent deburring. The cobalt‑alloy base offers improved wear resistance during interrupted cuts or harder workpiece zones, translating into reduced rework and longer intervals between tool changes. For production planners and maintenance engineers, these characteristics mean fewer process deviations and a more predictable maintenance schedule for tapping operations.

For application advice or rapid procurement of the RUKO HSS‑Co5 M5 tap, contact Metav Werkzeuge for expert guidance and local supply from Emmerich.

Technical data

• Article number: 4000601923NW
• UID: 4000601923NW
• Designation: Machine tap DIN 371B M5 x 0.8 HSS‑Co5 6H RUKO
• Manufacturer: Ruko GmbH
• Packing unit: 1

Facts

• Thread: M5 x 0.8
• Tolerance field: ISO2 (6H)
• Shank diameter: 6 mm
• Suitable tensile strength: up to 1000 N/mm²
• Cutting direction: right‑hand
• Standard: DIN 371B

Special features

• Material: HSS‑Co5
• Form: Form B, straight fluted
• Flank finish: flanks relieved (flank honing)
• Chamfer: peel‑cut chamfer for through threads
• Applications: unalloyed and alloyed steels, temper cast iron, non‑ferrous metals
• Thread type: ISO metric thread (DIN 13 Blatt 1)

FAQ

What materials can be tapped with this tool?
The RUKO tap is suitable for unalloyed and alloyed steels, temper cast iron and various non‑ferrous metals up to 1000 N/mm² tensile strength.

What does the 6H tolerance mean for assemblies?
A 6H tolerance (ISO2) specifies the internal thread tolerance class; the result is a reliable fit with standard bolts and predictable assembly torque for consistent joints.

Is this tap intended for machine use or hand tapping?
The tool is a machine tap (DIN 371B) with a 6 mm shank and right‑hand cutting, intended for use in powered tapping machines or automatic tapping heads.

How does the Form B geometry affect performance?
Form B straight flutes promote controlled chip evacuation on through holes and, together with the chamfer, reduce exit burrs for cleaner final threads.

Which standard confirms the thread profile?
Thread geometry conforms to ISO metric specifications and references DIN 13 Blatt 1 for thread form and pitch compatibility.

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