Williams Comfort Products QJO16A Torque Wrench Head

Product Description

The WILLIAMS COMFORT PRODUCTS QJO16A is a 1/2-inch open-end torque wrench head designed for precision fastening applications in trade and industrial settings. It features a J-type shank measuring 0.425 inches and delivers a maximum torque of 34 foot-pounds. The head spans 2.5 inches from the center of the fastener to the retaining pin, giving technicians accurate, consistent leverage on hard-to-reach fasteners. Licensed mechanics, HVAC technicians, and plumbers working with SAE fasteners will find this head a practical addition to a torque wrench system where controlled tightening is required.

This torque wrench head is suited for residential and light commercial service work where precise torque application on SAE-standard fasteners is necessary. Typical applications include equipment assembly, service panel work, and mechanical connections that specify a torque value. The open-end configuration allows access to fasteners in confined spaces where a box-end or socket style cannot seat properly.

Key Features

• 1/2-inch open-end head for SAE fastener applications
• J-type shank with 0.425-inch shank size for secure torque wrench engagement
• Maximum torque rating of 34 foot-pounds
• Center of fastener to retaining pin distance of 2.5 inches
• Compact profile: approximately 0.4 x 2.8 x 1 inches overall footprint
• Lightweight at 0.1 pounds for easy single-hand use

Compatibility

Designed as an OEM-style replacement torque wrench head compatible with J-type shank torque wrench handles accepting a 0.425-inch shank diameter.

Installation Notes

Installation and use should be performed by a qualified technician familiar with torque specifications for the fasteners being serviced. Ensure the torque wrench handle is de-energized or relieved of any load before attaching or removing the head. Verify the J-type shank seats fully and the retaining pin engages before applying torque. Do not exceed the maximum rated torque of 34 foot-pounds to avoid damage to the head or fastener.

Technical Specifications

• Head Size: 1/2 inch
• Head Type: Open End
• Shank Type: J
• Shank Size: 0.425 inches
• Maximum Torque: 34 foot-pounds
• Center of Fastener to Retaining Pin: 2.5 inches
• Overall Dimensions: 0.4 x 2.8 x 1 inches
• Weight: 0.1 pounds
• Fastener Standard: SAE
• Unit of Measure: Each

Standard Information

• Brand: WILLIAMS COMFORT PRODUCTS
• Manufacturer Part Number: QJO16A