Drill Bit Bosch 4 mm Diameter 2609255904 – straight shank, masonry and concrete use

Bosch drill bit 2609255904 with a 4 mm diameter is designed for drilling into masonry and concrete. The bit has a straight shank that fits standard drill chucks and is intended for use in construction, renovation and repair tasks where compact, precise holes are required. This 4 mm masonry bit is suitable for professionals and DIY users who need a reliable small-diameter tool for anchoring, fastening, and creating pilot holes.

Advantages

The straight shank provides stable clamping in common drill chucks, while the 4 mm diameter allows for accurate, small holes in dense materials such as concrete and brick. The Bosch part 2609255904 is manufactured to industry tolerances to ensure consistent drilling performance and longer life under typical masonry use.

Suitable for

• Drilling pilot holes for wall anchors and screws in concrete and masonry
• Installing fixtures, fasteners and small anchors in brick or block
• Renovation and repair tasks requiring compact, precise holes

Key specifications

• Brand: Bosch
• Manufacturer part number (MPN): 2609255904
• EAN: 3165140389730
• Diameter: 4 mm
• Shank: straight shank (compatible with standard chucks)
• Intended material: masonry and concrete

How to use

Mark the drilling point, secure the workpiece if necessary, and select an appropriate drill with a compatible chuck. Fit the 4 mm Bosch bit (2609255904) into the drill chuck and tighten securely. Start drilling at low speed to create a guide, then increase speed and apply steady pressure suitable for masonry drilling. Withdraw the bit periodically to clear dust and avoid overheating. Use appropriate personal protective equipment such as safety glasses and a dust mask.

Usage recommendations

For best results in hard concrete, use the bit with a hammer-drill function when available and match the hole diameter to the anchor or fastener specifications. Store the bit in a dry place to prevent corrosion and inspect before use for wear or damage.