Proto J7018M Impact Socket 3/8 in Drive 18mm 6-point

Product Description

The PROTO J7018M is a 6-point impact socket designed for heavy-duty fastening applications in automotive, mechanical, and industrial trades. Built for use with 3/8 inch drive impact wrenches and rattle guns, this socket accepts 18mm hex fasteners and delivers reliable torque transfer without rounding corners. The 6-point design concentrates force on the flats of the fastener rather than the corners, reducing the risk of fastener damage under high-torque conditions. With an overall length of 2-47/64 inches, it fits standard impact drive setups used by mechanics, fleet technicians, and industrial maintenance crews.

This socket is suited for professional automotive repair, fleet maintenance, heavy equipment service, and general mechanical work requiring an 18mm drive point. The 3/8 inch drive size makes it compatible with mid-range impact wrenches commonly used for suspension work, engine accessories, and drivetrain components. It is sold individually and is appropriate for both shop bench use and field service applications.

Key Features

• 3/8 inch drive size compatible with standard mid-range impact wrenches
• 18mm socket size fits metric hex fasteners common in automotive and industrial equipment
• 6-point hex drive design reduces fastener rounding under high-torque impact use
• Overall length of 2-47/64 inches suits standard depth fastening applications
• Designed for impact use, not hand-tool-only chrome sockets

Compatibility

Designed as an OEM-style replacement or direct-use impact socket for 3/8 inch drive impact wrenches requiring an 18mm 6-point hex socket.

Installation Notes

Impact sockets should only be used with impact wrenches or air tools rated for the drive size — do not substitute chrome hand-tool sockets in impact applications. Inspect the socket for cracks or deformation before each use and retire any damaged sockets immediately. Secure the socket fully onto the impact wrench anvil and verify the retaining pin or ring is engaged before applying torque.