M4 x 0.7mm Machine Tap Form B HSS Straight Flute 6H Tolerance Through Hole Chamfered Cutting - Ruko GmbH

Combining HSS cutting geometry, ISO tolerance 6H and a straight‑fluted Form B design ensures consistent, high‑quality threads in production environments; ideal for machining unalloyed and low‑alloy steels up to 800 N/mm². Order the machine tap directly via Metav Werkzeuge or consult our specialists for application advice and supply options.

Machine tap DIN 371B M4 x 0.7 HSS 6H – RUKO

A machine tap DIN 371B M4 x 0.7 HSS 6H RUKO optimised for fast, repeatable threading in production and maintenance settings across steel, cast iron and non‑ferrous materials

• HSS, Form B, straight‑fluted
• Metric ISO thread M4 x 0.7
• Tolerance field ISO2 (6H)
• Suitable for steels up to 800 N/mm²

Accurate threads that fit first time

The combination of DIN 371B geometry and the ISO2 (6H) tolerance field provides reproducible thread profiles and reliable interchangeability. Manufactured from HSS, this tap maintains cutting edge stability under continuous machine use, reducing the risk of rework. The relieved flanks and precision form minimise thread distortions and ensure each tapped hole meets dimensional expectations, which supports predictable assembly performance and shorter inspection cycles.

Cutting geometry tailored to through‑hole production

Built as Form B with a straight‑fluted layout and a defined cutting chamfer for through threads, the tool manages chip flow for clean evacuation in powered tapping operations. The tool is specified for unalloyed and low‑alloy steels up to 800 N/mm², temper cast iron and a range of non‑ferrous metals, offering process flexibility across typical workshop materials. The right‑hand cutting direction and flank relief reduce cutting forces and contribute to a consistent surface finish in the thread flanks.

Smooth integration into workshop routines

The specified shaft diameter 4.5 mm facilitates secure clamping in standard tool holders, supporting stable spindle engagement and repeatable tool runout. With a focus on production efficiency, the design reduces cycle variability and helps maintain machine uptime. For teams seeking technical clarification on application limits or fixturing, Metav Werkzeuge supplies detailed guidance to support setup and ensure the component matches process requirements.

Contact Metav Werkzeuge for tailored advice and fast supply of the RUKO machine tap M4 x 0.7 (SKU 4000601889NW); phone +49 2822 7131930 or email info@metav-werkzeuge.com

Technical Data

• Article number: 4000601889NW
• Description: Maschinengewindebohrer DIN 371B M4x0,7mm HSS 6H RUKO
• Manufacturer: Ruko GmbH Präzisionswerkzeuge
• Packaging unit: 1

Facts

• Thread: M4 x 0.7
• Tolerance: ISO2 (6H)
• Shaft diameter: 4.5 mm
• Material strength rating: up to 800 N/mm²
• Cutting direction: right‑hand

Special features

• Material: HSS
• Form B, straight‑fluted
• Flank relief (flanks relieved)
• Metric ISO thread to DIN 13 sheet 1
• Cutting chamfer for through threads
• Suitable for unalloyed and low‑alloy steels, temper cast iron and non‑ferrous metals

FAQ

Which materials can be machined with this tap?
The RUKO machine tap DIN 371B M4 x 0.7 (SKU 4000601889NW) is suitable for unalloyed and low‑alloy steels up to 800 N/mm², temper cast iron and various non‑ferrous metals.

What does the ISO2 (6H) tolerance mean for assemblies?
ISO2 (6H) indicates a standardised tolerance field that ensures consistent external and internal thread fits; the RUKO tap produces threads that meet the expected interchangeability for metric assemblies.

Is this tool intended for hand or machine tapping?
This is a machine tap designed for powered tapping operations; the straight‑fluted, Form B geometry and right‑hand cut are optimised for machine use and through‑hole threading.

Does the tap have a coating?
No coating is specified for this RUKO tap; the tool is manufactured from high‑speed steel (HSS) and relies on its base material and geometry for cutting performance.

What is the supplied shank size and packaging?
The tool has a shaft diameter of 4.5 mm and is supplied in a packaging unit of 1 (SKU 4000601889NW).

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