Proto J5426SPL Spline Socket 1/2 in Drive 26 Spline

Product Description

The PROTO J5426SPL is a spline socket designed for heavy-duty fastener removal and installation in professional trade and industrial settings. Built for a 1/2 inch drive, it fits a 26-spline fastener profile and accepts a 13/16 inch hex size. The 12-point internal geometry provides solid engagement on spline fasteners commonly found in drivetrain, suspension, and mechanical assembly applications. This socket meets Federal Spec GGG-W-641e and ANSI Spec B107.1, confirming it is built to recognized dimensional and strength standards. At 0.23 pounds, it is a compact and durable hand-tool addition for technicians, mechanics, and maintenance professionals working across automotive, industrial, and mechanical service environments.

The J5426SPL is suited for applications requiring precise engagement on 26-spline fasteners where standard hex or 12-point sockets will not fit. Typical use cases include suspension work, axle and drivetrain service, and mechanical assembly tasks where spline-drive fasteners are specified by the OEM. It is appropriate for both shop and field use by trade professionals who need a code-compliant, standardized socket for repetitive or critical fastener work.

Key Features

• 1/2 inch drive size for use with standard 1/2 inch drive ratchets, extensions, and torque wrenches
• 26-spline profile provides positive engagement on spline-drive fasteners
• 13/16 inch hex size for accurate fastener fitment
• 12-point design allows multiple engagement positions during use
• Meets Federal Spec GGG-W-641e and ANSI Spec B107.1 for dimensional and performance compliance

Compatibility

Designed for use with 1/2 inch drive ratchets, breaker bars, torque wrenches, and extensions. Compatible with 26-spline fasteners requiring a 13/16 inch hex engagement. No specific OEM model compatibility was stated in the product data.

Installation Notes

Install and remove with standard 1/2 inch drive hand tools, air tools, or torque wrenches as required by the application. Inspect the socket for cracks, wear, or deformation before each use and replace if damaged. When using with a torque wrench, ensure the socket is fully seated on the fastener before applying torque. Follow the equipment manufacturer service procedures and applicable industry standards for fastener torque requirements.