Twist drill bit Bosch Metal HSS-G DIN 338 2.5 mm 2 pcs

The Bosch Metal HSS-G DIN 338 twist drill bit, 2.5 mm, pack of 2, is designed for precise drilling in a range of metals and hard plastics. Made from high-speed steel and precision-ground, these drill bits deliver improved drilling rates and reduced feed pressure compared with standard-ground HSS bits. The self-centring split point eliminates the need for pre-punching or pilot drilling for holes up to 10 mm, making the set suitable for common metalworking tasks.

Advantages

The precision-ground HSS-G geometry provides up to 40% faster drilling and up to 50% lower feed pressure versus standard chisel-edge HSS drills. The self-centring split point improves accuracy and reduces walking on the workpiece. Available in Topline quality for the highest requirements and in a professional standard quality, the drill bits balance durability and cutting performance for repeated use.

Suitable for

• Alloyed and non-alloyed steel up to 900 N/mm² tensile strength
• Cast steel, cast iron, sintered and malleable cast iron
• Non-ferrous metals (e.g., aluminium, copper)
• Hard plastics

Key specifications

• Brand: Bosch
• Type: Twist drill bit HSS-G DIN 338
• Diameter: 2.5 mm
• Pack quantity: 2 pieces
• MPN: 2608585909
• EAN: 3165140521444

How to use

Secure the workpiece and select the correct drill speed for the material being drilled. Clamp the 2.5 mm HSS-G drill bit firmly into the drill chuck. Start drilling at low speed to locate the hole, then increase speed while maintaining steady feed pressure; the split point reduces the need for pilot holes up to 10 mm. Withdraw the drill periodically to clear chips and avoid overheating.

Usage recommendations

Use cutting fluid when drilling tougher steels and castings to extend tool life and improve chip evacuation. For best results, choose the Topline quality when working on harder or more abrasive materials and follow the recommended speeds for HSS drill bits.