RUKO HGB-DIN352-HSS-60°-1 Metric Taper Tap, M1 x 0.25 mm, HSS, DIN 352, 6H, 3 Flutes, Bright

Threading at M1 x 0.25 mm demands precision, and this RUKO taper tap delivers with a 6H tolerance class and 60° thread angle. The HSS construction with bright finish handles unalloyed steels, cast iron, and non-ferrous metals, while the taper lead starts threads cleanly in through or blind holes.

Overview

The RUKO HGB-DIN352-HSS-60°-1 is a metric machine tap manufactured to DIN 352. It features a nominal diameter of 1 mm with a 0.25 mm pitch, three straight flutes, and a right-hand cutting direction. The taper lead (Vorschneider) reduces cutting forces at thread entry, making it suitable for manual threading applications.

What stands out

• Precision 6H tolerance class for reliable thread fit
• High-speed steel (HSS) for durability across common materials
• Taper lead for easier starting and reduced breakage risk
• Compact overall length of 38 mm for access in tight spaces

Technical details

• Thread standard: Metric (M)
• Nominal diameter: 1 mm
• Thread pitch: 0.25 mm
• Tool standard: DIN 352
• Material: High-Speed Steel (HSS)
• Flute type: Straight flutes
• Lead type: Taper lead (Vorschneider)
• Tolerance class: 6H
• Overall length (L1): 38 mm
• Thread length (L2): 7 mm
• Shank diameter (d2): 1.6 mm
• Square drive size (a): 1.2 mm
• Number of flutes: 3
• Cutting direction: Right-hand
• Thread angle: 60°
• Surface finish: Bright (uncoated)
• Application: Manual threading for through and blind holes
• Recommended material group: Unalloyed and low-alloy steels, cast iron, non-ferrous metals

Our verdict

A specialized tap for M1 threads, built to DIN 352 with HSS and a 6H tolerance. The taper lead and three flutes make it a practical choice for precise manual threading in small diameters.