Williams Comfort Products QZO38A Torque Wrench Head

Product Description

The WILLIAMS COMFORT PRODUCTS QZO38A is an open-end torque wrench head designed for high-torque fastening applications in professional trade environments. Built to an SAE specification with a 1 3/16 inch open-end head, this wrench head accommodates a 0.990 inch Z-type shank and delivers a maximum torque rating of 433 foot-pounds. The center of fastener to retaining pin measurement is 5 3/4 inches, providing consistent geometry for controlled torque application. This is a precision hand tool intended for use by experienced mechanics, HVAC technicians, plumbers, and other tradespeople who require accurate torque output on large fasteners.

This torque wrench head is suited for heavy-duty fastening tasks in residential and commercial mechanical installations. It is appropriate for applications where standard combination wrenches cannot achieve the required torque level, such as flange connections, large mechanical fittings, and structural fastener assemblies. Its open-end head design allows access to fasteners in confined or partially obstructed spaces common in mechanical rooms and equipment installations.

Key Features

• 1 3/16 inch open-end head for SAE fasteners
• Maximum torque capacity of 433 foot-pounds
• 0.990 inch Z-type shank for compatible torque wrench drives
• Center of fastener to retaining pin distance of 5 3/4 inches
• Sold individually as a single head unit

Compatibility

Designed for use with compatible Z-shank torque wrench drives accepting a 0.990 inch shank diameter. Verify shank compatibility with the torque wrench handle before use.

Installation Notes

This torque wrench head should be installed and operated by qualified trade professionals familiar with torque tool safety. Confirm the shank is fully seated and the retaining pin is secure before applying load. Do not exceed the rated maximum torque of 433 foot-pounds. Inspect the head for wear or damage before each use and replace if any deformation is observed.

Technical Specifications

• Head Type: Open End
• Head Size: 1 3/16 inches
• Shank Size: 0.990 inches
• Shank Type: Z
• Maximum Torque: 433 foot-pounds
• Center of Fastener to Retaining Pin: 5 3/4 inches
• Standard: SAE
• Length: 7.49 inches
• Width: 5.91 inches
• Height: 0.99 inches
• Weight: 1.35 pounds
• Sold As: Each

Standard Information

• Brand: WILLIAMS COMFORT PRODUCTS
• Manufacturer Part Number: QZO38A