Williams Comfort Products QJO20A Torque Wrench Head

Product Description

The WILLIAMS COMFORT PRODUCTS QJO20A is a 5/8 inch open-end torque wrench head designed for precision fastening applications in trade and industrial service work. It accepts a J-type shank measuring 0.425 inches and delivers a maximum torque of 60 foot-pounds, making it suitable for controlled torque application where an open-end profile is required to access fasteners that a standard closed socket cannot reach. The center-of-fastener to retaining pin measurement is 2.5 inches. At 0.14 pounds, it is a lightweight accessory that attaches to a compatible torque wrench drive. Licensed mechanics, HVAC technicians, plumbers, and pipefitters use this type of head when torque specifications must be met on hex fasteners in confined or offset locations.

This torque wrench head is suited for SAE fastener sizes in residential and commercial service environments. It is particularly useful when working on refrigerant line fittings, gas connections, or mechanical assemblies where a specific foot-pound value must be achieved and verified. The open-end head style allows engagement on fasteners that are partially obstructed or installed in tight clearance areas where a box-end or socket-style head would not fit.

Key Features

• 5/8 inch open-end head size for SAE fasteners
• Maximum torque rating of 60 foot-pounds
• J-type shank with 0.425 inch shank diameter for compatible torque wrench drives
• Center-of-fastener to retaining pin distance of 2.5 inches
• Lightweight at 0.14 pounds for reduced hand fatigue during repeated use
• SAE specification for use with standard inch-measurement fasteners

Compatibility

Designed for use with J-type shank torque wrench drives accepting a 0.425 inch shank. Verify drive compatibility with your existing torque wrench before installation.

Installation Notes

Installation should be performed by a qualified technician familiar with torque fastening procedures. Ensure the torque wrench drive is set to the required foot-pound value before applying load, and confirm the shank is fully seated and the retaining pin is engaged before use. Do not exceed the 60 foot-pound maximum torque rating. Consult applicable mechanical codes and equipment manufacturer specifications for required fastener torque values.

Technical Specifications

• Head Size: 5/8 inches
• Head Type: Open End
• Shank Size: 0.425 inches
• Shank Type: J
• Maximum Torque: 60 foot-pounds
• Center of Fastener to Retaining Pin: 2.5 inches
• Length: 0.4 inches
• Width: 3 inches
• Height: 1.2 inches
• Weight: 0.14 pounds
• Measurement Standard: SAE
• UOM: Each

Standard Information

• Brand: WILLIAMS COMFORT PRODUCTS
• Manufacturer Part Number: QJO20A