Socket bit Facom J.1/4 12-point 3/8" drive; 1/4" hex insert (J.1/4)

Facom J.1/4 is a 12-point socket bit engineered for use with a 3/8" drive and a 1/4" hex insert. It creates a compact adapter between 3/8" drive tools and 1/4" hex fasteners, combining the reach and torque capacity of a 3/8" drive with compatibility for smaller hex heads. The 12-point geometry enables multiple engagement angles, which helps reduce rounding of fastener corners and facilitates work in confined or obstructed spaces.

Advantages

The 12-point profile offers improved engagement on hex fasteners and allows repositioning in tighter increments compared with 6-point designs. The bit provides a reliable mechanical interface between different drive sizes while maintaining compact dimensions for access in narrow areas. Its construction is intended to withstand typical mechanic and maintenance torque demands while minimising slippage during use.

Suitable for

• Converting 3/8" drive ratchets or extensions to 1/4" hex fasteners
• Automotive repair and maintenance where access is limited
• Mechanical and industrial applications using 1/4" hex screws or bolts
• Service, installation, and assembly tasks requiring precise engagement

Key specifications

• Drive size: 3/8" (input)
• Insert type: 1/4" hex (output)
• Contact geometry: 12-point profile for multi-angle engagement
• Primary function: adapter/socket bit for converting drive to hex fasteners
• Typical applications: mechanic, maintenance, assembly use where access and torque control are needed

How to use

Attach the socket bit to a compatible 3/8" drive tool (ratchet, extension, or torque wrench) until it seats securely. Position the 1/4" hex insert onto the hex fastener and apply torque evenly, avoiding sudden impacts or excessive force beyond the tool's rated capacity. For confined spaces, use the 12-point geometry to engage the fastener at alternate angles to reposition the tool without removing the bit completely. Inspect the seating of the bit and fastener before and during use to minimise wear and slippage.

Usage recommendations

Use with tools rated for the required torque and avoid applying shock loads. Keep the bit and fastener clean of debris and inspect for wear; replace if rounding or damage is visible. For precision torque applications, verify compatibility with the torque tool and consider using a dedicated 1/4" drive bit or adapter designed for torque measurement when exact values are critical.