Williams Comfort Products QZO54A Torque Wrench Head

Product Description

The WILLIAMS COMFORT PRODUCTS QZO54A is an open-end torque wrench head designed for high-torque fastening applications where precise control is required. Built to SAE specification, this head accepts a Z-type shank with a 0.990-inch shank diameter and delivers a maximum torque rating of 480 ft-lb. At 2.24 pounds, it is a solid, purpose-built tool head suited for use by mechanics, millwrights, and trade technicians working on heavy-duty assemblies. The 1 11/16-inch open-end size targets larger fasteners common in industrial and mechanical service work.

This torque wrench head is suited for professional applications requiring controlled torque delivery on large SAE fasteners. The open-end design allows access in confined or offset positions where a standard socket cannot engage. The center-of-fastener to retaining-pin dimension of 5 3/4 inches provides the offset geometry needed for specific fastener placements. Typical use cases include equipment assembly, mechanical system service, and maintenance work on heavy machinery or HVAC and plumbing infrastructure installations.

Key Features

• 1 11/16-inch open-end head size for large SAE fasteners
• Maximum torque rating of 480 ft-lb for heavy-duty applications
• Z-type shank with 0.990-inch shank diameter for secure drive connection
• Center of fastener to retaining pin: 5 3/4 inches for offset access
• SAE specification for compatibility with standard inch-measurement fasteners
• Compact profile at 0.79 inches height for use in tight clearances

Compatibility

Designed for use with Z-type torque wrench drives accepting a 0.990-inch shank. Verify drive tool compatibility before installation. No specific model or system compatibility was provided in the product data.

Installation Notes

Installation and use should be performed by a qualified technician familiar with torque wrench equipment and fastener specifications. Confirm that the drive tool shank type and size match the Z-type, 0.990-inch shank requirement before applying load. Do not exceed the 480 ft-lb maximum torque rating. Inspect the head and drive connection for wear or damage before each use.