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The PROTO J10021 is a 6-point impact socket designed for heavy-duty fastener removal and installation in industrial, mechanical, and maintenance applications. Built on a 1 inch drive, it accepts a 1-5/16 inch hex fastener and measures 2.75 inches in overall length. The 6-point geometry concentrates force on the flat sides of a fastener rather than the corners, reducing rounding on worn or corroded hardware. This socket is intended for use with 1 inch drive impact wrenches and is well suited for technicians working on heavy equipment, large machinery, structural assemblies, and similar high-torque environments.
The J10021 fits applications requiring a 1 inch drive tool setup, common in fleet maintenance shops, heavy equipment service, construction, and industrial facilities. Its 1-5/16 inch socket size covers fasteners found on structural bolts, large mechanical assemblies, and commercial vehicle components. Technicians working in trades that demand consistent high-torque output from pneumatic or electric impact tools will find this socket sized appropriately for those demands.
Designed as an OEM-style replacement or direct-use impact socket for 1 inch drive pneumatic, hydraulic, or electric impact wrenches in heavy-duty service applications.
Installation and use of this socket should be performed by qualified mechanics or industrial technicians familiar with impact tooling. Always confirm the drive tool is rated for 1 inch drive torque output before use. Ensure the socket is fully seated on the fastener and the retaining pin or ring is secured before applying torque. Power down or de-energize equipment and relieve any stored mechanical pressure before breaking fasteners loose on assemblies under load.
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