Proto J10064L Impact Socket 1 in Drive 4 in Hex 6-point

Product Description

The PROTO J10064L is a heavy-duty impact socket designed for high-torque fastening and removal applications in the trades. Built from alloy steel, it accepts a 1 inch square drive and fits a 4 inch hex fastener head using a 6-point contact pattern. The 6-point design concentrates force on the flat sides of the fastener, reducing rounding under impact loads. At 6.5 inches overall length, the socket provides adequate reach for recessed or flanged fastener positions. It is suited for industrial maintenance, heavy equipment service, and structural steel work where large-diameter fasteners are common.

The J10064L is intended for use with 1 inch drive impact wrenches and ratchets in commercial, industrial, and heavy-equipment environments. Typical applications include torquing large structural bolts, machinery fasteners, and equipment mounting hardware. The 4 inch hex socket size is most commonly encountered in heavy mechanical and industrial maintenance settings rather than residential service work. Licensed mechanics, millwrights, ironworkers, and heavy-equipment technicians are the primary users of sockets in this drive and size class.

Key Features

• 1 inch square drive accepts standard 1 inch impact wrenches and ratchets
• 4 inch hex socket size suits large industrial and structural fasteners
• 6-point drive geometry reduces fastener rounding under high-torque impact loads
• Alloy steel construction rated for impact tool use
• 6.5 inch overall length provides reach in recessed fastener applications

Compatibility

Designed for use with 1 inch drive impact wrenches, torque wrenches, and ratchets accepting standard square-drive sockets.

Installation Notes

This socket is intended for use with 1 inch drive impact tools only — do not use with hand-ratchet tools not rated for impact loads. Ensure the drive pin and retaining ring are fully seated before applying torque. Inspect the socket for cracks or deformation before each use and remove it from service if damage is found. Follow applicable OSHA and manufacturer torque guidelines for the fastener being serviced.