Drill Bit Bosch 2609255401 4 mm Diameter 75 mm Length

The Bosch 4 mm x 75 mm drill bit is designed for precision drilling in a range of common materials. With a straight-shank design and a length suited for moderate-depth holes, this single bit offers stable rotation and accurate center guidance for clean, consistent holes. Intended for general workshop and household use, the bit is compatible with standard drill chucks and supports both hand-held and drill-press applications.

Advantages

This 4 mm drill bit provides accurate hole positioning and a clean cut edge, reducing the need for post-drilling finishing. Its 75 mm overall length gives extra reach compared with short bits while remaining rigid enough for controlled drilling. Manufactured to Bosch quality standards, the bit balances wear resistance with reliable cutting performance for repeated use in woodworking, plastics, and light metalworking.

Suitable for

• Drilling small-diameter holes in wood and composite boards
• Creating pilot holes for screws and fasteners
• Drilling through plastics and acrylic sheets
• Light-duty drilling in soft metals such as aluminium

Key specifications

• Diameter: 4 mm
• Overall length: 75 mm
• Shank type: straight cylindrical shank for standard chucks
• Intended use: general-purpose drilling for woodworking, plastics, and light metalwork
• Compatibility: suitable for handheld drills and drill presses with compatible chuck sizes

How to use

Select a drill speed appropriate for the material—lower speeds for metals and higher speeds for wood and plastics. Secure the workpiece and, where possible, use a clamp or vise to prevent movement. Insert the 4 mm shank into the drill chuck and tighten securely. Start drilling with steady, even pressure, keeping the drill perpendicular to the surface to maintain hole accuracy. Withdraw the bit occasionally when drilling deeper holes to clear chips and reduce heat build-up.

Usage recommendations

Wear appropriate personal protective equipment such as safety glasses and gloves. For best results when drilling metals, use cutting lubricant and apply moderate speed. When drilling delicate materials, use backing support to avoid splintering and reduce pressure to prevent cracking.