Williams Comfort Products QJRXS10A Torque Wrench Head

Product Description

The WILLIAMS COMFORT PRODUCTS QJRXS10A is a 5/16-inch flare nut torque wrench head designed for precise fastening in SAE applications. It features a 6-point contact geometry for improved grip on fastener flats, reducing the risk of rounding during high-torque applications. The J-type shank measures 0.425 inches in diameter and mates with compatible torque wrench handles. Maximum torque rating is 17 foot-pounds. This head is intended for professional use by HVAC technicians, plumbers, and mechanical trades requiring controlled torque on flare nut fittings in refrigerant, gas, or fluid line assemblies.

This torque wrench head is suited for residential and light commercial service work where flare nut connections require a verified torque value. Typical applications include refrigerant line set connections, gas supply tubing fittings, and other SAE-threaded flare connections where overtightening can damage seating surfaces. The compact head dimensions allow access in moderately tight equipment compartments.

Key Features

• 5/16-inch flare nut head for SAE flare fittings
• 6-point contact design reduces fastener rounding under load
• Maximum torque rating of 17 foot-pounds
• J-type shank at 0.425 inches diameter for compatible torque wrench handles
• Compact profile: 3.03 inches long, 0.67 inches wide, 0.43 inches tall
• Lightweight at 0.12 pounds for extended use without fatigue

Compatibility

Designed for use with J-type shank torque wrench handles accepting a 0.425-inch shank. Fits standard SAE 5/16-inch flare nut fittings as used in refrigerant and gas line applications.

Installation Notes

Installation should be performed by a qualified HVAC technician or licensed tradesperson familiar with torque-controlled fastening procedures. Ensure the torque wrench handle is set to the correct value before engaging the fitting, and verify the flare seating surface is clean and undamaged before tightening. Do not exceed the 17 foot-pound maximum torque rating. Consult applicable codes such as ASHRAE or equipment manufacturer specifications for required torque values on specific connection types.

Technical Specifications

• Head Size: 5/16 inches
• Head Type: Flare Nut
• Point Type: 6 Point
• Shank Size: 0.425 inches
• Shank Type: J
• Maximum Torque: 17 foot-pounds
• Length: 3.03 inches
• Width: 0.67 inches
• Height: 0.43 inches
• Weight: 0.12 pounds
• Thread Standard: SAE

Standard Information

• Brand: WILLIAMS COMFORT PRODUCTS
• Manufacturer Part Number: QJRXS10A