Williams Comfort Products QJOM21A Torque Wrench Head 21MM

Product Description

The WILLIAMS COMFORT PRODUCTS QJOM21A is a 21 MM open-end torque wrench head designed for precision fastening in applications that demand controlled torque output. Built with a J-type shank measuring 0.425 inches, this interchangeable head mounts to compatible torque wrench handles and delivers a maximum torque of 60 ft-lb. The open-end head design allows access to fasteners in tight or obstructed spaces where a standard closed socket cannot fit. Weighing just 0.23 pounds, it is a lightweight addition to a professional tool kit. Trades workers and mechanics who require repeatable, calibrated torque on metric hardware will find this head a reliable service tool.

This torque wrench head is suited for mechanical and maintenance applications involving metric fasteners in the 21 MM range. It is appropriate for use in HVAC equipment assembly, plumbing fixture installation, and general mechanical service work where open-end access and controlled torque are both required. The interchangeable J-shank design allows it to pair with a compatible torque wrench handle, making it a flexible option for technicians who work across multiple fastener sizes on a single job.

Key Features

• 21 MM open-end head for access in confined or obstructed fastener locations
• Maximum torque rating of 60 ft-lb for controlled, repeatable fastening
• J-type shank at 0.425 inches for compatibility with matching torque wrench handles
• Lightweight at 0.23 pounds for reduced hand fatigue during extended use
• Metric sizing for use on standard metric hardware

Compatibility

Designed as an interchangeable open-end torque wrench head for use with J-shank compatible torque wrench handles requiring a 21 MM metric open-end fitting.

Installation Notes

This head should be installed onto a calibrated J-shank torque wrench handle before use. Verify the head is fully seated and secured on the shank before applying torque to any fastener. Do not exceed the rated maximum torque of 60 ft-lb, as overloading the head can damage the tool or the fastener. Installation should be performed by qualified trades professionals following applicable equipment service standards.

Technical Specifications

• Head Size: 21 MM
• Head Type: Open End
• Shank Type: J
• Shank Size: 0.425 inches
• Maximum Torque: 60 ft-lb
• Length: 0.4 inches
• Width: 3 inches
• Height: 1.6 inches
• Weight: 0.23 pounds
• Unit of Measure: Each

Standard Information

• Brand: WILLIAMS COMFORT PRODUCTS
• Manufacturer Part Number: QJOM21A