Socket Bit Wera 8790 FA 10 mm 1/4" Hex – interchangeable screwdriver bit for 1/4" drive

Wera 8790 FA 10 mm 1/4" Hex is an interchangeable 10 mm hex socket bit made for use with 1/4" drive holders and ratchets. The bit provides accurate hex engagement for tightening and loosening hex-headed fasteners in confined spaces and on assemblies where a compact, replaceable bit is preferred. It is intended for professional and hobby use in workshops, maintenance, and assembly operations that require a reliable, easy-to-change 1/4" hex solution.

Advantages

The Wera 8790 FA 10 mm 1/4" Hex socket bit offers precise fit to hex fasteners, reducing cam-out and wear on both bit and fastener. Its interchangeable 1/4" shank allows quick replacement in standard bit holders, sockets, and torque handles compatible with 1/4" drive. The compact length makes it suitable for use in tight or recessed locations, while the robust material construction ensures consistent performance during repeated fastening cycles.

Suitable for

• Workshop and garage fastening and disassembly tasks
• Maintenance and repair of machinery with hex-headed fasteners
• Assembly lines and production fixtures using compact 1/4" drive tooling
• Electronics or small equipment where space is limited

Key specifications

• Bit type: Hex (6-sided) socket bit
• Size: 10 mm hex
• Drive interface: 1/4" drive shank compatible with standard 1/4" holders
• Length: compact/short design for access to confined spaces
• Material: hardened steel suitable for repeated fastening operations

How to use

Insert the 1/4" drive shank of the Wera 8790 FA 10 mm hex bit into a compatible 1/4" holder, ratchet, or bit driver until it seats securely. Place the hex socket over the hex-headed fastener and apply steady torque, turning clockwise to tighten and counterclockwise to loosen. For controlled torque applications, install the bit into a calibrated 1/4" torque driver or adapter. Remove the bit by pulling it from the holder or releasing any retention mechanism on the bit holder.

Usage recommendations

Use the Wera 10 mm 1/4" hex bit with tools rated for the intended torque range and avoid applying torque beyond the bit's material limits. Keep the hex bit clean and free of debris to maintain secure engagement; inspect regularly for rounding or wear and replace the bit when signs of damage appear. For precision assemblies, use a torque-controlled driver and ensure the bit is fully seated before applying torque.