Proto J10018SS Impact Socket 1 in Drive 1-1/8 in 4-point

Product Description

The PROTO J10018SS is a 4-point impact socket designed for heavy-duty fastener removal and installation in demanding trade environments. Built from alloy steel, this socket accepts a 1-inch drive and fits a 1-1/8-inch fastener. The 4-point contact geometry concentrates torque directly on the flats of a fastener rather than the corners, which helps reduce rounding on worn or stubborn hardware. At 2.5 inches overall length, it is suited for use with pneumatic and hydraulic impact wrenches common in industrial, construction, and fleet maintenance work. Mechanical technicians and tradespeople working with heavy equipment or structural fasteners are the primary users.

This socket is applied where 1-inch drive impact tooling is standard, including heavy equipment repair, structural steel assembly, and industrial maintenance. The 4-point drive design makes it particularly useful when working with square-headed fasteners or heavily corroded hardware that standard 6-point or 12-point sockets may strip. It is appropriate for stationary impact guns, air-powered torque tools, and hydraulic wrenches operating at high torque output levels typical of 1-inch drive equipment.

Key Features

• 4-point socket geometry for positive engagement on square and worn fasteners
• Alloy steel construction rated for impact-tool use
• 1-inch drive size compatible with heavy-duty pneumatic and hydraulic impact wrenches
• 1-1/8-inch socket opening for corresponding fastener size
• 2.5-inch overall length for standard reach applications
• Limited lifetime warranty from the manufacturer

Compatibility

Designed as an OEM-style replacement and direct-fit impact socket for 1-inch drive impact wrenches requiring a 1-1/8-inch socket in industrial and heavy equipment service applications.

Installation Notes

This socket is installed and used by mechanical technicians and tradespeople operating 1-inch drive impact equipment. Always ensure the socket is fully seated on the drive anvil and the retaining pin or ring is engaged before applying torque. Inspect the socket for cracks or deformation before each use and remove from service if damage is found. Do not use impact sockets with hand ratchets or torque wrenches, as they are not designed for that application.