Socket 3/8" with 4 mm hex bit, King Tony (model 4932480831)

King Tony 3/8" socket with integrated 4 mm hex bit is a compact tool designed for use with 3/8" drive ratchets and torque tools. The socket combines a standard 3/8" drive interface with a fixed 4 mm hex (imbus) tip, allowing direct engagement with hex-head screws and bolts without a separate bit adapter. It is intended for work where a low-profile hex fastening solution is needed, such as confined spaces in mechanical, automotive and general maintenance applications.

Advantages

The integrated 4 mm hex bit provides reliable contact with fasteners and reduces bit wobble compared with removable adapters. Compatibility with 3/8" drive tools enables use with common ratchets and torque wrenches, maintaining control over applied torque. The single-piece construction simplifies tool selection and storage, and the compact length allows access to recessed or partially obstructed hex fasteners. Materials and finish are selected to resist wear during routine professional use.

Suitable for

• Assembly and disassembly of machines and equipment with 4 mm hex fasteners
• Automotive repair tasks requiring a 3/8" drive and a 4 mm hex tip
• Maintenance work in confined or hard-to-reach areas
• Use with torque tools for controlled fastening

Key specifications

• Drive size: 3/8" (9.5 mm)
• Tip type: fixed 4 mm hex (imbus)
• Construction: single-piece socket with integrated bit
• Compatibility: designed for use with 3/8" drive ratchets and torque wrenches
• Application areas: mechanical, automotive and general maintenance fastening

How to use

Attach the socket to a 3/8" drive ratchet, extension, or torque wrench by pushing it onto the drive square until it seats securely. Position the 4 mm hex tip into the fastener head, ensuring full engagement before applying torque. Turn the ratchet or apply torque as required for loosening or tightening; when using a torque tool, follow the torque settings appropriate for the fastener and material to avoid over-tightening. After use, inspect the tip for wear and store the socket in a tool organizer to protect the hex surface.

Usage recommendations

Use the socket with appropriately rated 3/8" drive torque tools when precise torque control is required. Avoid excessive impact or side loading on the fixed hex tip to prevent deformation. Regularly check the hex tip for rounding or wear and replace the socket when fit to fasteners becomes loose.