Drill Bits Set Bosch 2608587014 19 pcs High-Speed Steel

The Bosch 2608587014 Drill Bits Set contains 19 high-speed steel (HSS) twist drill bits engineered for reliable, precise drilling across a range of metals and common materials. The set includes HSS cobalt-enhanced bits with 5% cobalt content and fully ground flutes manufactured to DIN 338. Each bit features a split-point 135° tip and two cutters with two flutes for fast chip removal, reduced wandering and improved centring. Bits have a cylindrical shank equal to the drill diameter, suitable for use in drill drivers and drill stands. The compact set is intended for professional and DIY use where durability and consistent hole quality are required.

Advantages

The cobalt-alloy HSS composition provides increased wear resistance and heat protection compared with standard HSS, extending tool life when working with hard or heat-generating materials. Fully ground flutes and a split-point tip deliver accurate starting, reduced walking and efficient chip evacuation. The cylindrical shank design allows secure clamping in chucks and supports use in both hand-held drills and bench drill presses. Conformance to DIN 338 ensures consistent geometry and tolerance for repeatable performance.

Suitable for

• Drilling stainless steel and acid- or heat-resistant steels
• Drilling alloyed and non-alloyed steels
• Working with cast iron and cast steel
• General metalworking tasks in workshops and construction sites
• Home and professional DIY projects requiring durable metal-drilling bits

Key specifications

• Material: High-speed steel (HSS) with approximately 5% cobalt alloy
• Manufacturing standard: DIN 338
• Tip geometry: Split-point 135° for active cutting and precise centring
• Flute design: Two flutes and two cutters for efficient chip removal
• Shank type: Cylindrical shank, diameter equal to drill bit diameter
• Tolerance class: Diameter tolerance h8
• Set size: 19 pieces

How to use

Select the drill bit diameter appropriate for the hole required and clamp the bit securely in the drill chuck so the cylindrical shank seats fully. Use a steady feed and appropriate spindle speed: lower speeds for stainless and harder steels to reduce heat, higher speeds for softer metals. Apply cutting fluid or coolant when drilling alloyed, hardened or stainless steels to extend bit life and improve chip evacuation. Start drilling with light pressure until the split-point tip locates the centre, then increase feed steadily while avoiding excessive loading or side forces.

Usage recommendations

For best results, use variable-speed drill settings and suitable cutting lubricant when working with stainless or heat-resistant steels. Inspect bits for wear or damage and replace worn bits to maintain hole quality and reduce risk of breakage. Store the set in a dry place and keep bits clean of chips and residues after use.