Williams Comfort Products QZO88A Torque Wrench Head 2.75 in

Product Description

The WILLIAMS COMFORT PRODUCTS QZO88A is an open-end torque wrench head designed for high-torque fastening applications in industrial, mechanical, and heavy-equipment service environments. Built to SAE standards, this wrench head delivers up to 480 foot-pounds of maximum torque through a Z-type shank with a 0.990-inch shank diameter. At 2.75 inches, the open-end head size suits large fasteners found in machinery, pipe flanges, and structural assemblies. Licensed mechanics, millwrights, and industrial technicians rely on this type of tooling when precision torque application is required on oversized or hard-to-reach fasteners.

This torque wrench head is suited for heavy-duty applications where standard socket-drive tools cannot access large fasteners. The open-end design allows engagement on fasteners in confined or obstructed locations. The 5.75-inch center-of-fastener to retaining-pin measurement accommodates proper torque wrench coupling geometry. Typical use cases include industrial maintenance, large-diameter pipe fitting, structural bolting, and commercial equipment servicing where controlled torque application is critical.

Key Features

• Open-end head design for access on large fasteners in tight spaces
• Maximum torque rating of 480 foot-pounds for heavy-duty applications
• 2.75-inch head size built to SAE standards
• Z-type shank with 0.990-inch shank diameter for compatible torque wrench drive
• Center of fastener to retaining pin measures 5.75 inches for proper coupling geometry
• Sold individually — one head per unit

Compatibility

Designed for use with torque wrenches accepting a Z-type shank with a 0.990-inch shank diameter. Verify shank interface compatibility with your torque wrench drive before installation.

Installation Notes

Installation should be performed by a qualified mechanic or industrial technician familiar with torque wrench tooling. Ensure the wrench head is fully seated and locked onto the torque wrench shank before applying load. Do not exceed the 480 foot-pound maximum torque rating. Follow applicable equipment manufacturer torque specifications and relevant industry standards for the fastener application.

Technical Specifications

• Head Size: 2.75 inches
• Head Type: Open End
• Shank Size: 0.990 inches
• Shank Type: Z
• Maximum Torque: 480 foot-pounds
• Center of Fastener to Retaining Pin: 5.75 inches
• Standard: SAE
• Dimensions: 4 inches L x 8 inches W x 1 inch H
• Weight: 1 pound
• Unit of Measure: Each

Standard Information

• Brand: WILLIAMS COMFORT PRODUCTS
• Manufacturer Part Number: QZO88A