Williams Comfort Products QJO12A Torque Wrench Head

Product Description

The WILLIAMS COMFORT PRODUCTS QJO12A is a 3/8-inch open-end torque wrench head designed for precise fastener torquing in professional trade applications. It features a J-type shank measuring 0.425 inches and delivers a maximum torque of 18 foot-pounds, making it suitable for controlled-torque work where accurate fastener tension is critical. The center of fastener to retaining pin distance is 2.5 inches. Compact and lightweight at 0.07 pounds, this SAE head is intended for use with compatible torque wrenches and is typically installed by mechanical, HVAC, or plumbing technicians requiring accurate torque application on threaded fasteners.

This torque wrench head suits residential and commercial service environments where SAE fasteners require precise torque values. It is well suited for equipment installation, maintenance, and assembly tasks where an open-end head design is needed to access fasteners in tight or offset positions. The 3/8-inch open-end configuration accommodates a range of standard SAE fastener sizes encountered in typical trade service work.

Key Features

• 3/8-inch open-end head for SAE fastener applications
• Maximum torque rating of 18 foot-pounds
• J-type shank with 0.425-inch shank diameter
• Center of fastener to retaining pin: 2.5 inches
• Lightweight construction at 0.07 pounds for reduced fatigue
• SAE specification for compatibility with standard inch-measurement fasteners

Compatibility

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

Installation Notes

Installation and use of this torque wrench head should be performed by a qualified mechanic or trade technician familiar with torque tool operation. Ensure the torque wrench and head are fully engaged and locked before applying torque to any fastener. Do not exceed the maximum rated torque of 18 foot-pounds to avoid fastener damage or tool failure. Consult equipment manufacturer guidelines and applicable codes for required fastener torque specifications.

Technical Specifications

• Head Size: 3/8 inches
• Head Type: Open End
• Shank Size: 0.425 inches
• Shank Type: J
• Maximum Torque: 18 foot-pounds
• Center of Fastener to Retaining Pin: 2.5 inches
• Length: 0.4 inches
• Width: 2.8 inches
• Height: 0.8 inches
• Weight: 0.07 pounds
• Specification: SAE
• Unit of Measure: Each

Standard Information

• Brand: WILLIAMS COMFORT PRODUCTS
• Manufacturer Part Number: QJO12A