RUKO HGB-DIN352-HSS-60°-M30x3.50mm Hand Tap, Metric ISO Thread, Bright Finish

For machinists and maintenance technicians cutting M30 x 3.50 mm metric ISO threads in through or blind holes, this RUKO hand tap delivers reliable performance in unalloyed and low-alloyed steels, cast iron, and non-ferrous metals. The DIN 352 design with Form B chamfer (4-5 thread chamfer) ensures smooth thread starting and accurate pitch alignment.

Key specifications

• Thread size: M30
• Thread pitch: 3.50 mm
• Standard: DIN 352
• Material: High-Speed Steel (HSS)
• Cutting direction: Right-hand cut
• Tolerance class: ISO 2 (6H)
• Flank angle: 60°
• Tap type: Hand tap (single)
• Overall length: 170 mm
• Thread length: 50 mm
• Shank diameter: 22.0 mm
• Square drive: 18.0 mm
• Number of flutes: 4
• Chamfer form: Form B (4-5 thread chamfer)
• Surface finish: Bright (uncoated)

Why choose it

Precision-ground HSS construction provides long tool life and clean thread profiles. The 60° flank angle and ISO 2 tolerance class meet standard metric thread requirements, while the four-flute design allows efficient chip evacuation in both through and blind holes.

Ideal use cases

• Creating or repairing M30 threads in steel components
• Threading cast iron machine parts
• Working with non-ferrous metals such as aluminum or brass

Good to know

This tap is intended for manual operation with a suitable tap wrench. The bright finish reduces friction and resists corrosion during storage. For best results, use appropriate cutting fluid and follow recommended tapping speeds.