RUKO HGB DIN 352 HSS 60° M9 x 1,25 mm ručný závitník

For machinists and maintenance technicians threading blind or through holes in unalloyed and low-alloyed steels, this RUKO hand tap delivers a precise M9 x 1.25 metric coarse thread. The tap is manufactured from high-speed steel (HSS) with a bright, uncoated finish and a 60° flank angle, conforming to DIN 352 for consistent tool geometry.

Key specifications

• Thread size: M9 x 1.25 mm (metric coarse)
• Standard: DIN 352
• Material: High-speed steel (HSS)
• Flank angle: 60°
• Cutting direction: Right-hand
• Tolerance class: ISO 2 (6H)
• Overall length: 70 mm
• Thread length: 20 mm
• Shank diameter: 7.0 mm
• Square drive: 5.5 mm
• Recommended pre-drill diameter: 7.75 mm
• Type: Hand tap, single tap

Why choose it

The HSS construction provides good wear resistance for general-purpose threading, while the DIN 352 geometry ensures compatibility with standard tap wrenches. The bright finish reduces friction during cutting, and the precise thread form produces clean, accurate threads in steel workpieces.

Ideal use cases

• Creating M9 x 1.25 internal threads in steel components
• Repairing damaged threads in maintenance and repair operations
• Prototype and small-batch production in machine shops

Good to know

Use a suitable cutting fluid when tapping steel to extend tool life and improve thread finish. The recommended pre-drill diameter of 7.75 mm corresponds to the standard for M9 x 1.25 threads.