Proto J5270A Universal Joint 3/8 Drive 2 Inch Oal

Product Description

The PROTO J5270A is a 3/8 inch drive universal joint designed to extend reach and change drive angles in tight or awkward fastener locations. The joint accepts a 3/8 inch male drive input and delivers a 3/8 inch female drive output, with an overall length of 2 inches. Built to ANSI Spec B107.1 and Federal Spec GGG-W-641e, it meets recognized dimensional and performance standards for hand tools used in professional service environments. Weighing 0.14 pounds, it is compact enough to carry on a standard tool roll. Mechanics, HVAC technicians, plumbers, and electricians rely on universal joints when socket extensions cannot reach a fastener straight-on.

This universal joint is suited for use in residential and commercial maintenance, equipment service, and mechanical installation work wherever a 3/8 inch drive ratchet or extension needs to pivot around obstructions. Typical applications include engine and compressor service, panel work, and any confined-space fastener situation where a straight drive line is not possible. The 2 inch overall length keeps the assembly compact when working in tight quarters.

Key Features

• 3/8 inch male drive input and 3/8 inch female drive output for use with standard 3/8 inch drive sockets and extensions
• 2 inch overall length suits confined-space applications
• Meets ANSI Spec B107.1 dimensional and performance requirements
• Meets Federal Spec GGG-W-641e
• Lightweight at 0.14 pounds for easy carry on a tool belt or roll

Compatibility

Designed as an OEM-style replacement and general-use universal joint compatible with standard 3/8 inch drive hand tool systems including ratchets, extensions, and sockets.

Installation Notes

Universal joints are installed and removed by hand as part of a 3/8 inch drive socket setup — no special tools are required for attachment. When using a universal joint under torque, apply steady, controlled force to avoid side-loading the joint beyond its design angle. Always ensure the joint is fully seated on both the male and female drive ends before applying torque. Remove the joint from the drive setup before storing to prevent wear on the drive detents.