Williams Comfort Products QZO80A Torque Wrench Head

Product Description

The WILLIAMS COMFORT PRODUCTS QZO80A is an open-end torque wrench head sized at 2.5 inches, built for high-torque fastening applications in demanding trade environments. It accepts a Z-type shank with a 0.990-inch shank diameter, allowing it to mount to compatible torque wrenches for controlled, accurate tightening. The head delivers a maximum torque rating of 480 ft-lb, making it suitable for large fasteners found in mechanical, HVAC, and industrial piping work. The center-of-fastener to retaining pin distance measures 5.75 inches. Licensed trades professionals and industrial mechanics are the primary installers of this tool.

This torque wrench head is used in applications requiring precise high-torque output on large fasteners, particularly in mechanical rooms, industrial facilities, and commercial HVAC or plumbing installations. Its open-end design provides access to fasteners in locations where a closed or box-end head cannot be seated. The SAE sizing makes it appropriate for standard inch-measurement fastener stock commonly found in domestic mechanical equipment and structural assemblies.

Key Features

• 2.5-inch open-end head for large SAE fasteners
• Maximum torque capacity of 480 ft-lb
• Z-type shank with 0.990-inch shank diameter for secure drive attachment
• Center-of-fastener to retaining pin distance of 5.75 inches
• Sold individually (each) for single-head purchase flexibility

Compatibility

Designed as a replacement or supplementary open-end torque wrench head for use with Z-shank torque wrench handles accepting a 0.990-inch shank diameter.

Installation Notes

This torque wrench head is installed and used by licensed mechanics, pipefitters, and HVAC technicians working on large mechanical assemblies. Ensure the Z-type shank is fully seated and the retaining pin is properly engaged before applying torque load. Never exceed the rated maximum torque of 480 ft-lb, as overloading can damage the head or the fastener. Consult applicable codes such as ASME or manufacturer torque specifications for the assembly being serviced.

Technical Specifications

• Head Size: 2.5 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: 8.47 inches
• Width: 5.08 inches
• Height: 1.1 inches
• Weight: 6.19 pounds
• UPC: 0662459937261

Standard Information

• Brand: WILLIAMS COMFORT PRODUCTS
• Manufacturer Part Number: QZO80A