Williams Comfort Products QZOM55A Torque Wrench Head 55MM

Product Description

The WILLIAMS COMFORT PRODUCTS QZOM55A is a 55 MM open-end torque wrench head designed for high-torque fastening applications in industrial and trade service environments. It accepts a Z-type shank measuring 0.990 inches and is rated to a maximum torque of 480 ft-lb, making it well suited for heavy-duty bolted connections where precise torque control is required. This wrench head is a metric tool sold as an individual unit and is intended for use by mechanics, millwrights, pipefitters, and other trade professionals who work with large-diameter fasteners.

The QZOM55A is applicable in industrial maintenance, heavy equipment service, and commercial mechanical installations where 55 MM metric fasteners are encountered. Its open-end head design provides access in situations where a box or socket head cannot engage a fastener from above. Typical use cases include structural bolting, large flange connections, and heavy machinery assembly or disassembly tasks.

Key Features

• 55 MM open-end head for large metric fasteners
• Maximum torque rating of 480 ft-lb for heavy-duty applications
• Z-type shank with 0.990 inch shank size for secure drive engagement
• Compact profile: 4.5 inches length, 8 inches width, 1 inch height
• Sold as a single unit (each)

Compatibility

Designed for use with Z-type torque wrench drive systems that accept a 0.990 inch shank. Confirm drive compatibility with your torque wrench handle before installation.

Installation Notes

Installation and use should be performed by a qualified tradesperson familiar with torque wrench operation and proper fastener torque procedures. Ensure the wrench head is fully seated on the drive shank before applying load. Do not exceed the rated maximum torque of 480 ft-lb to avoid tool damage or fastener failure. Follow applicable industry standards and equipment manufacturer specifications when torquing critical connections.

Technical Specifications

• Head Size: 55 MM
• Head Type: Open End
• Shank Type: Z
• Shank Size: 0.990 inches
• Maximum Torque: 480 ft-lb
• Length: 4.5 inches
• Width: 8 inches
• Height: 1 inch
• Weight: 4.56 pounds
• UPC: 0662459964533

Standard Information

• Brand: WILLIAMS COMFORT PRODUCTS
• Manufacturer Part Number: QZOM55A