Williams Comfort Products QZO40ADP Torque Wrench Head

Product Description

The WILLIAMS COMFORT PRODUCTS QZO40ADP is a 1-1/4 inch open-end torque wrench head designed for precision fastening applications that demand controlled torque output. This head uses a dual-pin Z shank interface to attach to compatible torque wrench handles, providing a secure and repeatable connection. It is rated to a maximum torque of 480 ft-lb, making it suited for heavy-duty fastening work on large fasteners. The compact head profile measures 2.6 inches in length and 0.9 inches in height, keeping the tool accessible in tight clearances. Mechanics and industrial technicians working with SAE fastener sizes will find this head a practical addition to a torque wrench set.

This torque wrench head is intended for use in industrial, mechanical, and trade applications where 1-1/4 inch SAE fasteners require torque-controlled installation or removal. The open-end design provides access to fasteners in locations where a box or socket-style head cannot be used. It is sold as an individual head unit and paired with a separate torque wrench handle using the dual-pin Z shank system. Typical users include heavy equipment mechanics, pipefitters, millwrights, and maintenance technicians working on flanged connections, structural bolting, or large mechanical assemblies.

Key Features

• 1-1/4 inch open-end head fits SAE fasteners requiring high-torque installation
• Maximum torque rating of 480 ft-lb for heavy-duty fastening applications
• Dual-pin Z shank type provides a secure, indexed connection to the torque wrench handle
• Center of fastener to retaining pin distance of 5-3/4 inches for accurate torque arm reference
• Compact dimensions of 2.6 inches length and 0.9 inches height for use in confined spaces
• Sold individually, allowing users to build a set of heads for a single torque handle

Compatibility

Designed for use with torque wrench handles that accept a dual-pin Z shank interface. Verify shank compatibility with your existing torque wrench handle before ordering.

Installation Notes

Installation of this torque wrench head requires a compatible dual-pin Z shank torque handle. Ensure the retaining pin is fully seated and secure before applying torque to avoid head separation under load. Always confirm the fastener and torque specification against the applicable engineering or service documentation before use. Do not exceed the 480 ft-lb maximum torque rating of this head.

Technical Specifications

• Head Size: 1-1/4 inches
• Head Type: Open End
• Shank Type: Z Dual Pins
• Drive Type: Dual Pin
• Maximum Torque: 480 ft-lb
• Center of Fastener to Retaining Pin: 5-3/4 inches
• Measurement Standard: SAE
• Length: 2.6 inches
• Width: 7.6 inches
• Height: 0.9 inches
• Weight: 1.66 pounds
• Sold As: Each

Standard Information

• Brand: WILLIAMS COMFORT PRODUCTS
• Manufacturer Part Number: QZO40ADP