Williams Comfort Products QZO72A Torque Wrench Head

Product Description

The WILLIAMS COMFORT PRODUCTS QZO72A is a 2.25-inch open-end torque wrench head designed for high-torque fastening applications in professional trade environments. Built with a Z-type shank measuring 0.990 inches, this wrench head delivers a maximum torque of 480 ft-lb, making it suitable for heavy-duty mechanical work. The center-of-fastener to retaining pin distance measures 5.75 inches. Weighing 4.48 pounds, it is a solid, durable tool intended for use by licensed mechanics, HVAC technicians, plumbers, and other trade professionals who require precise torque application on larger fasteners.

This torque wrench head is used in residential and commercial trade applications where large fasteners demand controlled torque delivery. The open-end head style allows access in tight or obstructed spaces where a closed or box-end head cannot seat properly. It is suited for use on flanged fittings, large bolts, and mechanical connections commonly found in HVAC equipment, piping systems, and structural mechanical assemblies. Sold as a single unit, it is intended for use with compatible torque wrench drives that accept a Z-type shank.

Key Features

• 2.25-inch open-end head for large fastener applications
• Maximum torque rating of 480 ft-lb for heavy-duty use
• Z-type shank with 0.990-inch shank diameter for secure drive engagement
• Center-of-fastener to retaining pin distance of 5.75 inches
• SAE sizing for standard imperial fastener compatibility
• Weighs 4.48 pounds — substantial construction for high-torque demands

Compatibility

Designed for use with torque wrench drives that accept a Z-type shank. SAE sizing applies to standard imperial fasteners. Confirm shank and drive compatibility with your existing torque wrench before installation.

Installation Notes

This torque wrench head is installed by trade professionals including HVAC technicians, plumbers, and millwrights. Ensure the torque wrench drive is fully de-energized and the work area is clear before attaching or removing the head. Verify the Z-type shank seats fully and the retaining pin is secured before applying torque. Follow applicable mechanical and safety codes for the specific fastener application.

Technical Specifications

• Head Size: 2.25 inches
• Head Type: Open End
• Shank Size: 0.990 inches
• Shank Type: Z
• Maximum Torque: 480 ft-lb
• Center of Fastener to Retaining Pin: 5.75 inches
• Measurement Standard: SAE
• Length: 8.87 inches
• Width: 4.33 inches
• Height: 4.33 inches
• Weight: 4.48 pounds
• Sold As: Each

Standard Information

• Brand: WILLIAMS COMFORT PRODUCTS
• Manufacturer Part Number: QZO72A