RUKO HGB-DIN352-HSS-60°-3/4 Macho de roscar manual M8 x 1,25 mm Rosca métrica grossa DIN 352 HSS Blank

For machinists and maintenance technicians cutting M8 metric coarse threads by hand, the RUKO HGB-DIN352-HSS-60°-3/4 hand tap delivers reliable performance in steel, non-ferrous metals, and plastics. Its 60° thread angle and DIN 352 geometry ensure accurate thread profiles in through and blind holes.

Key specifications

• Thread size: M8
• Thread pitch: 1.25 mm
• Thread standard: Metric coarse
• Tool standard: DIN 352
• Material: High-speed steel (HSS)
• Surface finish: Bright (uncoated)
• Cutting direction: Right-hand
• Tolerance class: ISO 2 (6H)
• Total length: 70 mm
• Thread length: 22 mm
• Shank diameter: 6.0 mm
• Square drive size: 4.9 mm
• Number of flutes: 4
• Recommended core hole diameter: 6.8 mm

Why choose it

Precision-ground from HSS for durability and clean threads. The bright finish reduces friction and eases chip evacuation, while the 4-flute design balances strength and chip clearance for hand tapping.

Ideal use cases

• Creating M8 internal threads in steel components
• Repairing damaged threads in non-ferrous metals
• Tapping blind holes in plastic housings
• General maintenance and prototyping work

Good to know

Use with a suitable tap wrench and cutting fluid for best results. The recommended core hole diameter is 6.8 mm.