Proto J77418MP Impact Socket 3/8 Drive 18mm 6-point

Product Description

The PROTO J77418MP is a 3/8 inch drive, 18mm impact socket built for professional-grade fastener work in demanding service environments. Manufactured from alloy steel, this 6-point hex drive socket delivers reliable torque transfer when paired with impact wrenches or breaker bars. The 6-point geometry reduces the risk of rounding fastener corners under high torque compared to 12-point designs. At 2-3/32 inches overall length, it fits standard impact tool setups without adding unnecessary reach. It meets ASME B107.2 specifications, confirming dimensional and performance compliance for trade use. Mechanics, fleet technicians, and industrial maintenance professionals will find this socket suitable for regular impact duty.

This socket is appropriate for automotive, heavy equipment, and industrial maintenance applications where 18mm fasteners are common. The 3/8 inch drive size makes it compatible with mid-range impact wrenches and ratchets frequently used in engine bay work, suspension service, and general mechanical repair. The universal style designation indicates suitability across a broad range of fastener types within the 18mm hex range. It ships as a single unit, making it practical for adding to an existing socket set or replacing a worn piece.

Key Features

• 3/8 inch drive fits standard mid-range impact wrenches and ratchets
• 18mm 6-point hex drive reduces fastener rounding under high torque
• Alloy steel construction rated for impact duty use
• Meets ASME B107.2 dimensional and performance standard
• 2-3/32 inch overall length suits typical under-hood and chassis applications

Compatibility

Designed as an OEM-style impact socket for use with 3/8 inch drive impact wrenches, ratchets, and breaker bars requiring an 18mm 6-point hex socket.

Installation Notes

This socket is intended for use by qualified mechanics and maintenance technicians. Always verify the drive size of the impact tool matches the 3/8 inch drive of this socket before use. Inspect the socket for cracks or deformation before each use and retire any damaged sockets immediately. Do not use impact sockets with standard hand-drive torque wrenches unless the tool manufacturer specifically permits it.