Proto J5566 Standard Hand Socket 3/4 Drive 2-1/16 in 6 Point

Product Description

The PROTO J5566 is a standard hand socket designed for heavy-duty fastener work with a 3/4 inch drive. Built from alloy steel with a chrome finish, it fits a 2-1/16 inch fastener and features a 6-point geometry for maximum contact on hex fasteners. The overall length is 3-5/32 inches, classifying it as a standard-length socket. This socket meets ASME B107.110-2012 requirements. It is used by mechanics, millwrights, industrial maintenance technicians, and other trade professionals who require a reliable, code-compliant hand socket for high-torque applications.

The J5566 is suited for industrial, commercial, and heavy equipment maintenance environments where 3/4 inch drive tools are standard. Typical applications include fastener removal and installation on large mechanical assemblies, structural components, and heavy machinery. The 2-1/16 inch socket size is commonly encountered in structural bolting, pipeline flanges, and large equipment fasteners. This socket is packaged individually and is not rated for tethered tool programs.

Key Features

• 3/4 inch drive for use with heavy-duty ratchets, breaker bars, and torque wrenches
• 2-1/16 inch socket size fits standard hex fasteners in that dimension
• 6-point design maximizes contact surface and reduces fastener rounding under high torque
• Alloy steel construction for strength and durability in demanding applications
• Chrome finish provides corrosion resistance and ease of cleaning
• Meets ASME B107.110-2012 dimensional and performance standards

Compatibility

Designed as a standard OEM-style hand socket compatible with 3/4 inch drive ratchets, extensions, and torque wrenches. Not rated for tethered tool applications.

Installation Notes

Installation and removal should be performed by qualified mechanics or maintenance technicians familiar with 3/4 inch drive tooling. Ensure the drive tool and socket are fully engaged before applying torque. Inspect the socket for cracks, chips, or wear before each use and remove from service if damage is found. Do not use impact drivers with this hand socket unless the tool is specifically rated for impact use.