The five precision-ground HSS spiral drills from Bosch drill holes in metal with the highest accuracy. The self-centering drill tip with a cross-cut and a point angle of 135 degrees allows for perfect centering without any wandering. Thanks to the cross-cut drill tip, there is no need for center punching or pre-drilling up to 10 mm in diameter. The precision-ground HSS steel drills operate up to 40% faster and require up to 50% less pressure than conventionally ground HSS drills. The HSS-G spiral drills can drill alloyed and unalloyed steel, cast steel, cast iron, sintered iron, ductile iron, non-ferrous metals, and hard plastics. They are used with drill stands and screwdrivers. The 1/4" hex shank is compatible with cylindrical drill chucks as well as corded or cordless drills.

Technical Data

Suitable for: Drills, screwdrivers, bench drills

Set: 5-piece

Material suitability: Cast iron, plastic, metal, non-ferrous metals, steel

Tool holder: Standard drill chuck, quick-change drill chuck, hex 6.3 mm (1/4")

Included sizes: 2 mm / 3 mm / 4 mm / 5 mm / 6 mm

Design: with anti-slip shank, with centering tip

Container: Plastic folding box

Material: HSS (High-Speed Steel)

Additional information: The HSS-G spiral drill is manufactured according to DIN 338. It belongs to drill type N (small side cutting angle) with a 135-degree drill tip and diameter tolerance h8.