Twist Drill Bits Bosch HSS Cobalt 2608585883 5-13mm

Bosch HSS Twist Drill Bits Cobalt (2608585883) are high-speed steel drill bits with 5% cobalt content, designed for durable and precise drilling in a range of metals. Manufactured to DIN 338 as Type N with a 135° split-point tip and h8 diameter tolerance, these bits provide good centring and reduced walking. The set covers diameters from 5 mm to 13 mm and uses a cylindrical shank equal to the drill diameter, suitable for drill stands and hand-held drill drivers.

Advantages

The cobalt-alloyed HSS construction increases wear resistance and heat protection for longer tool life when working with stainless and alloyed steels. Fully ground flutes and two cutting edges ensure clean surface quality and efficient chip evacuation, which further extends service life. The 135° split-point tip gives active cutting and accurate centring without wandering, while the h8 tolerance maintains consistent hole diameters.

Suitable for

• Alloyed and non-alloyed steel
• Stainless steel
• Cast iron and cast steel
• Acid- and heat-resistant steels

Key specifications

• Brand: Bosch
• MPN: 2608585883
• EAN: 3165140521185
• Material: HSS with 5% cobalt
• Standard: DIN 338, Type N
• Tip angle: 135° split-point
• Diameter tolerance: h8
• Shank: cylindrical, shank = drill diameter
• Diameter range: 5–13 mm

How to use

Secure the appropriate diameter bit in the chuck of a drill driver or a drill stand using the cylindrical shank. Select a suitable drill speed and apply steady pressure; reduce speed and use cutting fluid when drilling stainless or heat-resistant steels to manage heat and improve tool life. Clear chips regularly to avoid clogging the flutes and to maintain cutting performance.

Recommendations

For best results, pre-drill pilot holes for large diameters, use appropriate lubricants or cutting fluids on stainless and alloyed steels, and avoid excessive feed rates or high speeds that can overheat the bit. Inspect bits for wear and replace when cutting performance degrades.