Bosch High-Speed Steel (HSS) Cobalt Drill Bit Set, 3-Flute Helical, 70mm Overall Length, 3.5mm Shank Size 2608585879

Bosch 2608585879 is a set of High-Speed Steel Cobalt (HSS-Co) drill bits engineered for demanding drilling tasks in tough and hard steels. The set includes 10 pieces of 3.5 mm diameter drill bits with an overall length of 70 mm and a drilling length of 39 mm, making it suitable for precise and efficient drilling operations.

These drill bits are manufactured with an alloyed high-speed steel composition containing 5% cobalt, delivering superior heat and wear resistance. This composition enables up to 40% faster drilling speeds and reduces feed pressure by 50% compared to standard HSS bits, which significantly enhances productivity.

The bits feature a 135° self-centring split-point tip as per DIN 338/1414, providing excellent positional accuracy and eliminating the need for pre-punching pilot holes up to 10 mm diameter. The helical 3-flute design ensures rapid removal of swarf and efficient cutting in tough materials.

These drill bits are compatible with both hand-held drills and pillar drills and are ideal for a wide array of industrial, construction, engineering, and carpentry applications. Their robust construction and sharp cutting edges ensure consistent performance in alloyed and non-alloyed steels with tensile strength up to 1000 N/mm².

Manufactured from alloyed high-speed steel with 5% cobalt for heat and wear resistance. 135° self-centring split-point tip reduces wandering for precise hole placement. Helical flute design allows rapid swarf ejection and efficient cutting.

Suitable for hand and machine use including pillar drills and drill stands. Meets DIN 338/1414 standards for jobber drill bits. Eliminates need for pilot holes for diameters up to 10 mm. Compatible with alloyed/non-alloyed steels up to 1000 N/mm² tensile strength.

Cylindrical 3.5 mm shank ensures secure chuck engagement. Set includes 10 drill bits for versatile industrial applications.

This Bosch drill bit set is an essential tool kit component for professionals involved in metalworking, construction, and mechanical workshops who demand durability, precision, and efficiency.

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