Proto J5422SPL Spline Socket 1/2 in Drive 22 Spline

Product Description

The PROTO J5422SPL is a 12-point spline socket designed for use with a 1/2 inch drive ratchet or breaker bar. It is sized for a No. 22 spline fastener with an 11/16 inch hex, making it a specialized tool for fastener types commonly found in heavy equipment, automotive, and industrial assemblies. The 12-point geometry provides additional contact angles for positioning in tight spaces. This socket is built to meet Federal Spec GGG-W-641e and ANSI Spec B107.1, confirming it meets established dimensional and performance standards for hand tool sockets used in professional and government service applications.

This socket is suited for automotive technicians, fleet maintenance mechanics, heavy equipment service professionals, and industrial maintenance trades. Spline sockets are called for when working with spline-drive fasteners that cannot be driven by standard hex or 12-point sockets. The J5422SPL fits into standard 1/2 inch drive toolsets and is appropriate for both production and field service environments where fastener compatibility with spline profiles is required.

Key Features

• 1/2 inch drive for use with standard ratchets, breaker bars, and extensions
• No. 22 spline size for compatibility with spline-profile fasteners
• 11/16 inch hex size for precise fastener engagement
• 12-point socket design increases positioning flexibility in confined areas
• Meets Federal Spec GGG-W-641e and ANSI Spec B107.1 for dimensional and material compliance

Compatibility

Designed for use with 1/2 inch drive ratchets, torque wrenches, breaker bars, and extensions. Intended for No. 22 spline fasteners with an 11/16 inch hex profile.

Installation Notes

Installation and removal of spline fasteners should be performed by a qualified mechanic or maintenance professional. Ensure the drive tool and socket are fully seated before applying torque to avoid rounding the fastener or damaging the socket. Inspect the socket for wear or cracks before each use and do not use impact-rated sockets on impact drivers unless the socket is rated for that application.