Proto J15057L Impact Socket 1-1/2 in Drive 3-9/16 in

Product Description

The PROTO J15057L is a heavy-duty impact socket built for high-torque applications where a standard chrome socket would fail. It accepts a 1-1/2 inch square drive and fits a 3-9/16 inch hex fastener with a 6-point contact geometry. The 6-point design concentrates force on the flats of the fastener rather than the corners, reducing the risk of rounding under power. Constructed from alloy steel, the J15057L carries an overall length of 6-3/4 inches and a weight of 17.24 pounds, making it suited for industrial, heavy equipment, and structural work rather than light assembly. Meets ANSI specification B107.2 and is backed by a lifetime warranty.

This socket is intended for use with 1-1/2 inch drive impact wrenches and torque multipliers found in heavy industrial maintenance, fleet shops, mining, construction equipment service, and structural steel work. The large drive size and fastener range place this tool in applications involving wheel hubs, large flange bolts, and heavy machinery assembly where controlled high-torque output is required. Licensed tradespeople and millwrights working on industrial equipment will find this socket appropriate for demanding fastener removal and installation tasks.

Key Features

• 1-1/2 inch square drive accepts heavy-duty impact wrenches and torque multipliers
• 3-9/16 inch, 6-point hex drive socket minimizes fastener rounding under high torque
• Alloy steel construction rated for impact use — not chrome or chrome-vanadium
• 6-3/4 inch overall length provides reach in recessed or flanged fastener applications
• Meets ANSI B107.2 specification for impact sockets
• Lifetime warranty from the manufacturer

Compatibility

Designed for use with 1-1/2 inch square drive impact wrenches, torque multipliers, and manual drive tools. Fits 3-9/16 inch hex fasteners in a 6-point configuration.

Installation Notes

Always verify the drive tool and socket drive size match before applying torque. Inspect the socket for cracks or deformation before each use — do not use impact sockets that show visible damage. Keep the socket retained on the drive with an appropriate pin-and-ring or hog ring retainer when working overhead or in confined spaces. Never use impact sockets with hand-drive ratchets as a substitute for impact-rated tooling.