Williams Comfort Products QXO28A Torque Wrench Head 7/8 Inch

Product Description

The WILLIAMS COMFORT PRODUCTS QXO28A is a 7/8 inch open-end torque wrench head designed for precision fastening in demanding trade applications. It accepts an X-type shank with a 0.735 inch shank diameter, allowing it to mate with compatible torque wrench handles for controlled tightening. The head delivers a maximum torque output of 193 ft-lb, making it suitable for heavy-duty fastener work on mechanical systems. The center-of-fastener to retaining-pin measurement is 4.5 inches. Licensed HVAC technicians, plumbers, and industrial mechanics rely on this type of head for consistent, repeatable torque application where standard fixed wrenches fall short.

This torque wrench head is used in residential and commercial mechanical service work where precise fastener torque is required. Typical applications include tightening flange bolts, fitting connections, and mechanical assembly tasks encountered in HVAC, plumbing, and general mechanical contracting. The open-end head design provides access to fasteners in locations where a box or socket head cannot seat properly. It is sold as an individual head and pairs with a compatible X-shank torque wrench handle.

Key Features

• 7/8 inch open-end head for direct fastener engagement without a socket
• Maximum torque rating of 193 ft-lb for heavy-duty fastening
• X-type shank with 0.735 inch diameter for secure handle connection
• Center-of-fastener to retaining-pin distance of 4.5 inches
• SAE sizing for use with standard inch-measurement fasteners
• Compact profile at 0.5 inches height for access in tight clearances

Compatibility

Designed for use with torque wrench handles that accept an X-type shank. Verify shank compatibility with your existing torque wrench handle before installation.

Installation Notes

This head is installed by qualified mechanics, HVAC technicians, or plumbers using a compatible X-shank torque wrench handle. Confirm the shank is fully seated and the retaining pin is engaged before applying torque. Do not exceed the 193 ft-lb maximum torque rating. Always consult the relevant mechanical or equipment specifications for the required fastener torque value before use.

Technical Specifications

• Head Size: 7/8 inch
• Head Type: Open End
• Shank Type: X
• Shank Size: 0.735 inches
• Maximum Torque: 193 ft-lb
• Center of Fastener to Retaining Pin: 4.5 inches
• Length: 6 inches
• Width: 2 inches
• Height: 0.5 inches
• Weight: 1.1 pounds
• Measurement Standard: SAE
• UOM: Each

Standard Information

• Brand: WILLIAMS COMFORT PRODUCTS
• Manufacturer Part Number: QXO28A