Drill bit Bosch 4 mm × 50 mm, model 2608901150, metal and wood drilling

Bosch 4 mm × 50 mm drill bit (model 2608901150) is a short-length twist drill designed for precise drilling in metal and wood. With a 4 mm cutting diameter and 50 mm overall length, the bit is intended for use in handheld and stationary drills when compact size and accurate pilot holes are needed. The geometry and materials of the cutting tip are optimized to provide clean starts and consistent hole dimensions in common workshop materials.

Advantages

The compact 50 mm length reduces deflection and improves control when creating small holes in metal and wood. The 4 mm diameter is suitable for pilot holes and fixings, delivering repeatable hole accuracy. Engineered by Bosch, the bit meets typical quality and balance requirements for everyday construction, maintenance and DIY tasks and is compatible with standard drill chucks.

Suitable for

• Pilot holes for screws and fasteners in wood
• Small-diameter holes in thin metal sheets and profiles
• Precision assembly and repair work
• Handheld drilling where short bit length is required

Key specifications

• Cutting diameter: 4 mm
• Overall length: 50 mm
• Suitable materials: metal and wood
• Drill type: twist drill for use with manual and power drills

How to use

Select a drill with a compatible chuck and tighten the bit securely. Mark the drilling point on the workpiece and, for metal, use cutting oil or lubricant as appropriate. Start drilling at low speed to establish the hole, then increase speed steadily while maintaining moderate feed pressure. After completing the hole, remove swarf and check hole dimensions; use deburring tools on metal if necessary.

Usage recommendations

Use appropriate personal protective equipment, clamp the workpiece to prevent movement, and match drilling speed and lubrication to the material—lower speeds for metal with lubricant, higher speeds for softwood without lubricant—to extend bit life and maintain hole quality.