Proto J10055M Impact Socket 1 in Drive 55mm 6-point

Product Description

The PROTO J10055M is a heavy-duty impact socket designed for use with 1 inch drive impact wrenches in professional mechanical and industrial applications. Built to a 6-point hex drive configuration, it accepts a 55mm fastener and measures 3-7/64 inches overall length (OAL). The 6-point geometry concentrates force on the flat faces of the fastener rather than the corners, reducing the risk of rounding under high-torque impact loads. At 3.71 pounds, this socket is sized for demanding work on large fasteners found in heavy equipment, trucking, and industrial machinery. It is intended for use by mechanics, fleet technicians, and industrial maintenance professionals.

This socket fits applications requiring a large-diameter metric fastener drive on equipment such as heavy trucks, agricultural machinery, mining equipment, and industrial assemblies where 55mm fasteners are standard. The 1 inch drive size is common in commercial and industrial service environments where high-torque output from pneumatic or hydraulic impact wrenches is required. It is not intended for hand-ratchet use under impact loads.

Key Features

• 1 inch drive size compatible with standard 1 inch drive impact wrenches and extensions
• 55mm socket size for large metric fasteners common in heavy equipment and industrial machinery
• 6-point hex drive geometry reduces fastener corner rounding under high-torque impact loads
• 3-7/64 inch overall length provides clearance in typical heavy-duty service applications
• Weighs 3.71 pounds, indicating substantial steel construction suited for impact service

Compatibility

Designed as an OEM-style replacement or service-grade impact socket for 1 inch drive impact tools used in heavy-duty mechanical and industrial applications requiring a 55mm hex drive socket.

Installation Notes

Installation and removal of fasteners using this socket should be performed by qualified mechanics or industrial technicians familiar with impact tooling. Always verify the drive square of the impact wrench is rated for 1 inch drive service before use. Inspect the socket for cracks, deformation, or wear before each use and remove from service if damage is found. Do not use impact sockets with standard hand ratchets under sustained torque loads.