Williams Comfort Products QJO8A Torque Wrench Head 1/4 in

Product Description

The WILLIAMS COMFORT PRODUCTS QJO8A is a 1/4-inch open-end torque wrench head designed for precision fastening applications in trade and industrial environments. Fitted with a J-type shank measuring 0.425 inches, this head attaches to compatible CDI torque wrenches and delivers a maximum torque output of 5 foot-pounds. The center of fastener to retaining pin distance measures 2.5 inches, allowing access to fasteners in confined or tight-clearance locations. Mechanical and HVAC technicians rely on this type of interchangeable torque head to apply controlled, repeatable torque without over-tightening fittings, connections, or hardware.

This torque wrench head is suited for light-duty fastening tasks across HVAC, plumbing, and general mechanical service work. It is particularly useful when working on small fasteners, fittings, or panels where a standard fixed torque wrench cannot reach. The SAE sizing makes it appropriate for inch-measurement fastener applications. It is sold individually and pairs with J-shank CDI torque wrench handles.

Key Features

• 1/4-inch open-end head for SAE fasteners
• J-type shank with 0.425-inch shank diameter for CDI torque wrench compatibility
• Maximum torque rating of 5 foot-pounds
• Center of fastener to retaining pin distance of 2.5 inches for tight-space access
• Lightweight at 0.05 pounds for extended use without fatigue
• Sold individually — one head per unit

Compatibility

Designed for use with J-shank CDI torque wrench handles accepting a 0.425-inch J-type shank. Verify shank size and type on the torque wrench handle before installation.

Installation Notes

Installation is performed by qualified mechanical or HVAC technicians familiar with torque wrench assembly. Ensure the torque wrench handle is not under load before attaching or removing the head. Seat the J-type shank fully into the handle receiver and confirm the retaining pin is engaged before applying torque. Do not exceed the 5 foot-pound maximum torque rating to avoid tool damage or fastener failure.

Technical Specifications

• Head Size: 1/4 inch
• Head Type: Open End
• Shank Size: 0.425 inches
• Shank Type: J
• Maximum Torque: 5 foot-pounds
• Center of Fastener to Retaining Pin: 2.5 inches
• Length: 0.4 inches
• Width: 2.8 inches
• Height: 0.4 inches
• Weight: 0.05 pounds
• Measurement Standard: SAE
• Sold As: Each

Standard Information

• Brand: WILLIAMS COMFORT PRODUCTS
• Manufacturer Part Number: QJO8A