Drill Bit Bosch 2609255091 2.5mm 57mm

The Bosch 2609255091 2.5mm x 57mm drill bit is a single precision metal drill designed for accurate hole making in a range of common materials. With a 2.5 mm diameter and 57 mm overall length, this bit provides a balance of reach and rigidity for small-diameter drilling tasks. It is intended for use in hand drills and drill presses compatible with standard straight-shank accessories and is suitable for both professional tradespeople and home users who need controlled, clean drilling results.

Advantages

This Bosch drill bit delivers consistent concentricity and a clean cutting edge to reduce burrs and improve hole quality. The 57 mm length offers extra working reach compared with shorter bits while maintaining sufficient stiffness to minimize flex during drilling. Manufactured to Bosch quality standards, the bit provides reliable performance and repeatability across multiple holes and materials typically encountered in repair, installation and assembly tasks.

Suitable for

• Drilling small-diameter holes in metal sheets and thin plates
• Creating pilot holes in wood and soft composites
• Precision drilling in plastics and acrylics
• Workshop drilling with hand drills and drill presses

Key specifications

• Diameter: 2.5 mm
• Overall length: 57 mm
• Shank type: straight
• Intended use: general-purpose precision drilling
• Material compatibility: metals, wood, plastics

How to use

Secure the drill bit in the chuck of a hand drill or drill press ensuring it is centered and tightened. Select a suitable drilling speed for the material: lower speeds for metals, medium speeds for plastics, and higher speeds for wood. Apply steady, moderate pressure and keep the drill perpendicular to the workpiece to maintain hole accuracy. Use cutting fluid or lubricant when drilling metals to extend bit life and reduce heat build-up. After use, remove chips from the flutes and store the bit in a protective case to prevent damage.

Usage recommendations

For best results when drilling metals, use a light cutting oil and run the drill at a lower RPM to preserve the cutting edge. For plastics and acrylics, start with a pilot entry at low speed to avoid chipping and adjust feed rate to prevent melting. Replace the bit when signs of wear or chipping appear to maintain hole quality and reduce the risk of breakage.