M5x0.8mm Machine Tap DIN 371B HSS Form B Straight Flute 6H Through Hole Cutting, 6mm Shank - Ruko GmbH

Take advantage of a robust combination of HSS construction and industry-standard tolerances for consistently accurate M5 threads; order directly via Metav Werkzeuge or consult our specialists for application advice.

Machine thread tap DIN 371B M5×0.8 HSS 6H RUKO — high‑precision M5 production tap with straight flute

The Machine thread tap DIN 371B M5×0.8 HSS 6H RUKO is a Form B, straight‑fluted production tap designed for through‑hole tapping in a range of engineering materials.

• High-speed steel (HSS) construction
• Straight flute, Form B geometry
• ISO metric thread M5×0.8, tolerance 6H
• Suitable for steels up to 800 N/mm²

Consistent ISO threads for reliable assemblies

The DIN 371B geometry ensures reproducible threads according to the metric ISO standard, delivering M5×0.8 threads with 6H tolerance for dependable assembly fit and interchangeability. Using a production tap conforming to DIN 13 Blatt 1 reduces rework and simplifies quality control because the thread form and pitch match standard fasteners. This consistency shortens inspection time and supports repeatable results on batch production.

Broad material compatibility reduces tooling complexity

Manufactured from HSS, this tap is specified for machining unalloyed and low-alloy steels up to 800 N/mm² tensile strength, as well as temper cast iron and non‑ferrous metals. Choosing one tool that covers these common materials lowers the number of items kept in stock and streamlines job planning. Explaining the limit: 800 N/mm² refers to tensile strength, so the tool is suited to typical structural steels rather than hardened alloys.

Geometry and chip control for efficient production

The Form B design with straight flute geometry and relieved flanks promotes predictable chip formation and clearance in through‑hole applications. The incorporated peel‑cut for through threads optimises the initial cutting action and reduces the risk of clogging, while the right‑hand cutting direction matches standard machine rotation. These features together support longer tool life and fewer interrupted cycles in repetitive tapping operations.

Machine readiness and simple clamping

A shank Ø 6 mm provides a compact, standard interface for collets and toolholders in production machines. The nominal shank size and robust HSS material make the tap suitable for integration into conventional tapping spindles or toolholders where secure clamping and axial run‑out control are required. Delivered in single units, the tool is ready for immediate use in machining routines where precision threads are mandatory.

For procurement of Ruko production taps and fast, reliable delivery from Metav Werkzeuge, contact our specialists in Emmerich — eMail info@metav-werkzeuge.com or call +49 2822 7131930

Technical data

• Article number: 4000601890NW
• Product: Machine thread tap DIN 371B M5×0.8 HSS 6H RUKO
• Manufacturer: Ruko GmbH
• Packaging unit: 1

Facts

• Thread: M5 × 0.8 mm
• Shank Ø: 6 mm
• Tolerance: ISO2 (6H)
• Material strength suitability: up to 800 N/mm²
• Cutting direction: right‑hand

Special features

• High‑speed steel (HSS)
• Form B geometry
• Straight fluted; flanks relieved
• Peel‑cut for through threads
• DIN 13 Blatt 1 (metric ISO thread)
• Suitable for unalloyed/low‑alloy steels, temper cast iron, non‑ferrous metals

FAQ

What materials can this tap machine effectively cut?
The Machine thread tap DIN 371B M5×0.8 HSS 6H RUKO is specified for unalloyed and low‑alloy steels up to 800 N/mm² tensile strength, temper cast iron and non‑ferrous metals.

Is this tap suitable for through holes or blind holes?
The tool is supplied with a peel‑cut geometry for through‑hole tapping; for blind holes, a tap with a different chamfer is normally recommended.

What thread accuracy and standard does the tool meet?
Threads comply with DIN 371B and DIN 13 Blatt 1, producing an ISO metric M5×0.8 thread to tolerance ISO2 (6H).

What is the shank diameter and how is it clamped?
Shank Ø is 6 mm, suitable for standard 6 mm collets and toolholders used in production machines.

Can this tap be used on hardened steel?
The tap is intended for materials up to 800 N/mm² tensile strength and is not specified for hardened steels above that limit.

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