Proto J07540M Impact Socket 3/4 in Drive 40mm 6-pt

Product Description

The PROTO J07540M is a 40mm, 6-point impact socket designed for heavy-duty fastener work in professional trade and industrial applications. Built for 3/4 inch drive impact wrenches and rattle guns, it delivers a secure hex engagement on large fasteners where slippage is not acceptable. The socket measures 2.5 inches in overall length and weighs 1.81 pounds, indicating a solid steel construction suited for high-torque service. Licensed mechanics, millwrights, pipefitters, and heavy equipment technicians reach for sockets in this size range when working on large flanged connections, structural fasteners, and industrial machinery.

This socket is appropriate for use in commercial, industrial, and heavy equipment maintenance environments. It fits standard 3/4 inch drive impact wrenches commonly found in fleet shops, fabrication facilities, and plant maintenance operations. The 40mm socket size is typical for large bolted assemblies on heavy trucks, industrial equipment, and structural steel work. The 6-point design concentrates drive force on the flats of the fastener rather than the corners, reducing fastener rounding under high torque.

Key Features

• 3/4 inch drive accepts standard 3/4 inch drive impact wrenches and breaker bars
• 40mm socket size suits large industrial and heavy vehicle fasteners
• 6-point hex geometry reduces corner rounding under high-torque impact use
• 2.5 inch overall length provides clearance in confined fastener locations
• 1.81 pound construction indicates substantial wall thickness for impact-rated service

Compatibility

Designed as an OEM-style replacement and standard fitment for 3/4 inch drive impact tools requiring a 40mm, 6-point hex socket.

Installation Notes

Installation should be performed by qualified mechanics or tradespeople familiar with impact tooling and torque procedures. Ensure the socket is fully seated on the drive anvil before applying torque, and inspect for cracks or deformation before each use. Never use impact sockets with hand-drive torque wrenches unless the tool is rated for impact service. Follow applicable workplace safety standards and equipment manufacturer torque specifications for the fastener being serviced.