Socket wrench Wera 05003331001 2.5 x 28 mm hex bit

Wera 05003331001 2.5 x 28 mm hex bit is a compact socket wrench accessory designed for accurate driving of hex screws and fasteners in confined or hard-to-reach locations. Manufactured by Wera, this bit combines precise geometry with a short 28 mm length to improve control when used with compatible bit holders, ratchets or manual handles. The tool is intended for workshop, maintenance and assembly tasks where a reliable fit and repeatable torque transmission are required.

Advantages

The hex bit delivers a precise fit to reduce cam-out and wear on fastener heads, while the short 28 mm profile increases accessibility in tight assemblies. Constructed from hardened steel with surface treatment, it offers enhanced durability and resistance to deformation under normal manual loading. The standardized 2.5 mm hex dimension ensures compatibility with common fasteners and most bit holders and sockets designed for hex bits.

Suitable for

• Electronics assembly and repair where compact bits are needed
• Furniture assembly and adjustments in confined spaces
• Maintenance tasks on machinery with recessed or closely spaced fasteners
• General workshop work requiring precise manual screwdriving

Key specifications

• Bit type: hex (Allen) 2.5 mm
• Length: 28 mm
• Material: hardened tool steel with protective surface treatment
• Compatibility: designed for use with standard bit holders, sockets and ratchets that accept hex bits
• Shape: cylindrical shank with hexagonal tip for secure engagement

How to use

Insert the 2.5 x 28 mm hex bit into a compatible bit holder, socket or ratchet and ensure it seats securely before applying force. Align the hex tip with the fastener head and apply steady, controlled torque to avoid slipping or rounding the fastener. For tight spaces, use the shorter 28 mm profile to maneuver the holder close to the workpiece; when greater reach is necessary, select a longer bit of the same diameter. Inspect the bit and fastener for damage regularly and replace the bit if tip deformation is visible.

Usage recommendations

Use hand tools or low-torque power drivers compatible with hex bits to preserve tip geometry. Avoid excessive impact or high-torque pneumatic tools unless the bit and holder are explicitly rated for such use. Store the bit in a dry place and keep it clean to maintain fit and performance.