Socket insert 10 mm 1/4" drive Wera 8790 HMA

Wera Socket Insert 10 mm 1/4" drive (model 8790 HMA) is a compact replaceable socket designed for use with 1/4" drives and compatible bit holders. The insert provides a 10 mm connection for tightening and loosening nuts and bolts where space is limited. Its small form factor and precise fit make it suitable for workshop, mechanical and assembly tasks that require access to confined areas or attachment to powered drivers and manual bit handles.

Advantages

The socket insert combines a hardened, wear-resistant contact surface with accurate dimensional tolerances to ensure consistent fit and reduced rounding of fasteners. Its replaceable design allows quick exchange on 1/4" bit holders or extension tools, minimizing downtime. The compact length improves accessibility in recessed or narrow fixtures while maintaining sufficient engagement depth for secure operation.

Suitable for

• Automotive maintenance in confined engine bays
• Assembly line tasks with 1/4" drive bit holders
• General workshop repairs and household projects
• Electronics and small machinery where space is limited

Key specifications

• Socket size: 10 mm
• Drive type: 1/4" (square drive for bit holders)
• Design: replaceable insert for bit holders and extensions
• Finish and material: hardened tool steel with wear-resistant surface
• Length: compact profile for access to tight spaces

How to use

Attach the socket insert to a compatible 1/4" drive bit holder, extension or ratchet. Align the socket over the fastener and apply steady torque using a manual driver or a compatible powered driver, taking care not to exceed recommended torque limits for the fastener or tool. For removal, reverse the rotation and withdraw the insert once the fastener is free. Replace the insert if wear or deformation is visible to maintain proper engagement.

Usage recommendations

Use the socket insert with tools and fasteners rated for 1/4" drive to avoid overloading. Keep the mating surfaces clean and free of debris to preserve fit accuracy. Inspect periodically for wear and replace when signs of rounding or cracking appear to ensure safe and reliable fastening operations.