Williams Comfort Products QZO48A Torque Wrench Head

Product Description

The WILLIAMS COMFORT PRODUCTS QZO48A is a heavy-duty open-end torque wrench head designed for high-torque fastening applications in industrial and mechanical service work. Built with a 1.5-inch open-end head and a Z-type shank measuring 0.990 inches, this tool accepts standard torque wrench drives and delivers a maximum torque capacity of 480 ft lb. The center of fastener to retaining pin measures 5.75 inches, providing the clearance needed for confined or offset fastening scenarios. Licensed mechanics, millwrights, and industrial service technicians reach for this head when standard sockets cannot access a fastener due to space or geometry constraints.

This torque wrench head is suited for heavy mechanical assemblies, industrial equipment maintenance, and structural fastening tasks that demand precise, high-torque application. The open-end head configuration allows engagement on fasteners where a closed socket cannot fit, making it a practical choice for pipe flanges, large machinery mounts, and similar applications. Sold individually, it pairs with compatible torque wrenches using a Z-type shank interface.

Key Features

• 1.5-inch open-end head for large fastener engagement
• Z-type shank with 0.990-inch shank size for secure torque wrench coupling
• Maximum torque rating of 480 ft lb for heavy-duty fastening
• 5.75-inch center of fastener to retaining pin for offset and confined access
• SAE sizing for use in standard inch-measurement fastening systems

Compatibility

Designed for use with torque wrenches that accept a Z-type shank interface. Consult your torque wrench manufacturer specifications to confirm shank compatibility before installation.

Installation Notes

Installation should be performed by qualified mechanics or industrial service technicians familiar with torque wrench tooling. Ensure the shank is fully seated and the retaining pin is engaged before applying torque to prevent tool disengagement under load. Do not exceed the 480 ft lb maximum torque rating. Follow applicable equipment service manuals and workplace safety standards when performing high-torque fastening operations.

Technical Specifications

• Head Type: Open End
• Head Size: 1.5 inches
• Shank Type: Z
• Shank Size: 0.990 inches
• Maximum Torque: 480 ft lb
• Center of Fastener to Retaining Pin: 5.75 inches
• Length: 7.68 inches
• Width: 3.07 inches
• Height: 1.06 inches
• Weight: 1.65 pounds
• Measurement System: SAE
• Sold As: Each

Standard Information

• Brand: WILLIAMS COMFORT PRODUCTS
• Manufacturer Part Number: QZO48A