Drill bit Bosch 4 mm × 50 mm, model 2608901387, metal and wood drilling

Straight shank drill bit by Bosch with a 4 mm cutting diameter and 50 mm overall length, designed for drilling in metal and wood. The bit features a simple, standard geometry suitable for general-purpose drilling in repair, assembly and light construction tasks. It is compatible with hand drills and drill presses that accept straight-shank bits and provides consistent hole size and stable cutting performance when used with appropriate speeds and clamping.

Advantages

This Bosch 4 mm × 50 mm drill bit offers reliable dimensional accuracy and uniform hole quality across repeated operations. Its straight shank ensures secure seating in chucks and easy interchange between tools. The cutting geometry balances chip evacuation and surface finish, making it suitable for both metal and wood applications. Manufactured to Bosch quality standards, the bit delivers consistent cutting behavior for routine workshop and on-site tasks.

Suitable for

• Drilling small-diameter holes in sheet metal and thin-walled components
• Creating pilot and clearance holes in wood and composite panels
• General repair and assembly work with hand drills and drill presses
• Furniture assembly and light carpentry tasks

Key specifications

• Cutting diameter: 4 mm
• Overall length: 50 mm
• Shank type: straight shank
• Suitable materials: metal and wood
• Compatibility: standard chucks on hand drills and drill presses

How to use

Secure the drill bit in the drill chuck, ensuring the shank is fully inserted and tightened. Select a suitable rotational speed for the material: moderate to high speeds for wood, and lower speeds with cutting fluid for metal to reduce heat and wear. Apply steady axial pressure, allow the bit to cut without excessive force, and clear chips regularly when drilling deeper holes. For accurate positioning, mark the drilling point and, if necessary, use a center punch for metal surfaces before drilling.

Usage recommendations

For best results, use appropriate personal protective equipment, clamp workpieces securely, and match drilling speed and lubrication to the material. Replace the bit when wear degrades hole quality or increases required feed force.