Proto J7318M Impact Socket 1/2 in Drive 18mm 6-point

Product Description

The PROTO J7318M is a 6-point impact socket designed for heavy-duty fastener removal and installation in professional trade environments. Built for 1/2 inch drive impact tools, this 18mm socket delivers the torque transfer and wall thickness needed to handle stubborn fasteners without rounding. The hex drive geometry and 6-point contact pattern distribute load evenly across fastener flats, reducing the risk of slippage under high torque. The 3.25 inch overall length provides clearance for recessed fastener applications. Licensed mechanics, industrial maintenance techs, and construction professionals reach for this socket for demanding production and service work.

This socket suits a wide range of applications where a 1/2 inch drive impact wrench or breaker bar is the tool of choice. Common uses include automotive service, heavy equipment maintenance, structural assembly, and mechanical contracting work. The 18mm size is a standard fitment across a broad spectrum of metric fastener applications found in both domestic and imported equipment.

Key Features

• 1/2 inch drive size compatible with standard impact wrenches and breaker bars
• 18mm socket size for metric fastener applications
• 6-point hex drive geometry for maximum contact and reduced fastener rounding
• 3.25 inch overall length for clearance in recessed or deep-set fastener locations
• Impact-rated construction for use with pneumatic, electric, and hydraulic impact tools

Compatibility

Designed as an OEM-style impact socket for use with standard 1/2 inch drive impact wrenches, breaker bars, and torque wrenches across professional and industrial applications.

Installation Notes

Always confirm the impact tool is powered off or depressurized before changing sockets. Verify the socket seats fully and the retaining pin or ring is engaged before applying torque. Do not use impact sockets with hand-drive ratchets in high-torque applications, and do not use standard chrome hand-drive sockets on impact tools. This socket should be inspected for cracks or deformation before each use and removed from service if damage is found.