Williams Comfort Products QZO46A Torque Wrench Head

Product Description

The WILLIAMS COMFORT PRODUCTS QZO46A is an open-end torque wrench head designed for precision fastening in demanding trade applications. Built to accept a Z-type shank with a 0.990-inch shank diameter, this head delivers a maximum torque rating of 480 ft-lb, making it suitable for heavy-duty bolted connections where controlled torque is critical. The 1 7/16-inch open-end jaw fits standard SAE fasteners of that size. With a center-of-fastener to retaining pin measurement of 5.75 inches, it provides the reach needed in confined or offset installation scenarios. Mechanical contractors, pipefitters, and industrial maintenance technicians will find this head useful wherever high-torque SAE fastening is required.

This torque wrench head is intended for use with compatible torque wrench handles that accept a Z-type shank. It is well suited for mechanical, plumbing, and industrial applications involving large SAE fasteners, flange bolts, and structural connections. The open-end head style allows engagement on fasteners in locations where a box or socket end cannot seat fully. Typical use cases include equipment installation, large valve assembly, and structural bolted joint assembly in commercial and industrial settings.

Key Features

• 1 7/16-inch open-end jaw fits standard SAE fasteners of that size
• Maximum torque capacity of 480 ft-lb for heavy-duty fastening applications
• Z-type shank with 0.990-inch shank diameter for compatible torque wrench handle fitment
• Center-of-fastener to retaining pin distance of 5.75 inches for offset reach
• Open-end head style allows fastener engagement in restricted access areas
• Compact profile at 7.56 inches length and 0.87 inches height for tight clearances

Compatibility

Designed for use with torque wrench handles that accept a Z-type shank with a 0.990-inch shank diameter. Consult your torque wrench handle documentation to confirm shank compatibility before use.

Installation Notes

This torque wrench head should be installed and used by qualified mechanical or maintenance technicians familiar with torque tool operation. Ensure the handle and head connection is fully seated and the retaining pin is secured before applying torque. Always verify that the fastener and head jaw are properly engaged before applying load to prevent slippage or fastener damage. Follow applicable industry standards and equipment manufacturer specifications for required torque values.

Technical Specifications

• Head Size: 1 7/16 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
• Length: 7.56 inches
• Width: 2.96 inches
• Height: 0.87 inches
• Weight: 1.59 pounds
• Drive Standard: SAE

Standard Information

• Brand: WILLIAMS COMFORT PRODUCTS
• Manufacturer Part Number: QZO46A