Williams Comfort Products QZO52A Torque Wrench Head

Product Description

The WILLIAMS COMFORT PRODUCTS QZO52A is a 1 5/8 inch open-end torque wrench head designed for precision fastening in demanding trade applications. It accepts a Z-type shank with a 0.990 inch shank size and is rated for a maximum torque of 480 ft-lb. The center of fastener to retaining pin measures 5 3/4 inches. This head is built for use by mechanics, millwrights, pipefitters, and other trade professionals who require controlled torque on large-diameter fasteners where a standard box or socket configuration is not practical.

This open-end torque wrench head is suited for heavy-duty fastening tasks in industrial, mechanical, and plumbing applications. It is particularly useful in tight or confined spaces where a closed-end tool cannot seat properly on the fastener. The 1 5/8 inch open-end profile covers SAE fastener sizes common in large pipe flanges, structural connections, and heavy equipment assemblies. It is sold individually and intended for use with a compatible Z-shank torque wrench drive tool.

Key Features

• 1 5/8 inch open-end head for 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 distance of 5 3/4 inches
• Compact profile at 0.79 inches in height, suited for low-clearance installations
• Sold individually — quantity is per each

Compatibility

Designed for use with Z-shank torque wrench drive tools requiring a 1 5/8 inch open-end SAE head with a 0.990 inch shank interface.

Installation Notes

This torque wrench head should be installed and used by qualified trade professionals familiar with controlled torque fastening procedures. Verify that the Z-shank drive tool is rated to meet or exceed the 480 ft-lb maximum torque of this head before use. Always de-energize or depressurize the system being serviced before applying torque to fasteners. Confirm the head is fully seated on the drive shank and the retaining pin is secured prior to applying load.

Technical Specifications

• Head Size: 1 5/8 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 3/4 inches
• Length: 7.88 inches
• Width: 3.27 inches
• Height: 0.79 inches
• Weight: 2.24 pounds
• Standard: SAE
• UPC: 0662459937179

Standard Information

• Brand: WILLIAMS COMFORT PRODUCTS
• Manufacturer Part Number: QZO52A