Williams Comfort Products QJO10A Torque Wrench Head

Product Description

The WILLIAMS COMFORT PRODUCTS QJO10A is a 5/16-inch open-end torque wrench head designed for precision fastening applications in trade and industrial service work. It features a J-type shank with a 0.425-inch shank diameter, a maximum torque rating of 9 foot-pounds, and a center-of-fastener-to-retaining-pin distance of 2.5 inches. The head is sold as an individual unit and is intended for use with compatible J-shank torque wrench handles. It is an SAE-specification tool suited for technicians who require controlled torque on small fasteners in tight or specialized applications.

This torque wrench head is used in service environments where precise, low-torque fastening is required on SAE-sized fasteners. The open-end head design allows access to fasteners in locations where a closed socket cannot engage. Typical installation scenarios include mechanical, HVAC, plumbing, and general trade service work involving small hardware. It is well-suited for bench repair and field service alike. The lightweight construction at 0.06 pounds makes it easy to carry in a standard tool kit without adding significant weight.

Key Features

• 5/16-inch open-end head for SAE fasteners
• J-type shank with 0.425-inch shank diameter for compatibility with J-shank torque handles
• Maximum torque rating of 9 foot-pounds for controlled low-torque fastening
• Center of fastener to retaining pin distance of 2.5 inches
• Lightweight at 0.06 pounds — minimal pack weight for field technicians
• Sold individually (each)

Compatibility

Designed for use with J-shank torque wrench handles that accept interchangeable heads. Specific handle compatibility should be verified against the J-shank interface specification prior to installation.

Installation Notes

Installation and use of this torque wrench head should be performed by qualified trade technicians familiar with torque wrench handle systems. Verify that the J-type shank seats fully and the retaining pin engages securely in the handle before applying torque. Do not exceed the 9 foot-pound maximum torque rating. Inspect the head for wear or damage before each use and replace if deformation is observed.

Technical Specifications

• Head Size: 5/16 inch
• Head Type: Open End
• Shank Type: J
• Shank Size: 0.425 inches
• Maximum Torque: 9 foot-pounds
• Center of Fastener to Retaining Pin: 2.5 inches
• Length: 0.4 inches
• Width: 2.8 inches
• Height: 0.5 inches
• Weight: 0.06 pounds
• Specification Type: SAE
• Sold As: Each
• UPC: 662459933980

Standard Information

• Brand: WILLIAMS COMFORT PRODUCTS
• Manufacturer Part Number: QJO10A