Williams Comfort Products JHW1240TSB 12-point Box Wrench

Product Description

The WILLIAMS COMFORT PRODUCTS JHW1240TSB is a 12-point straight box end wrench with a 1 1/4 inch opening, designed for professional trade use in tight-clearance fastener applications. The tubular wrench shaft features a detent that aligns the locking button with the handle hole, allowing the wrench to run down nuts quickly without a handle attached, then accept an optional handle for final tightening. SAE and corresponding metric fastener sizes are both marked on the wrench for quick reference on the job. Weighing 2.042 pounds and measuring 13.4 inches in length, it is built for durability in demanding service environments.

This wrench suits HVAC service technicians, plumbers, pipefitters, and general mechanical contractors who regularly work in confined spaces where a standard open-end or combination wrench cannot access the fastener. The straight box head profile keeps the tool low-profile against the work surface, making it practical for equipment panels, pipe flanges, and mechanical assemblies with restricted clearance around the fastener. The handle-optional design is particularly useful when speed is needed to run down multiple fasteners before final torque.

Key Features

• 12-point box end accepts both standard and worn fasteners with reduced risk of slippage
• 1 1/4 inch straight opening for direct, low-clearance access to fasteners
• Tubular shaft with detent allows use without a handle for rapid nut run-down
• Compatible with optional handles for added leverage during final tightening
• SAE and corresponding metric fastener sizes marked on the wrench
• Straight head geometry provides access where clearance is limited

Compatibility

Designed as a tubular box end wrench suitable for 1 1/4 inch SAE fasteners across a range of mechanical, HVAC, plumbing, and pipefitting applications. Compatible with optional handles in the WILLIAMS COMFORT PRODUCTS tubular wrench system.

Installation Notes

This tool is installed by the technician, not into a system — always ensure fasteners and mating threads are clean and undamaged before applying torque. Attach the optional handle only after the nut or bolt has been hand-run or wrench-run to near-seated position to avoid cross-threading. Follow applicable torque specifications from the equipment manufacturer or relevant code, such as IFGC or IPC, when tightening pipe or mechanical fittings. Inspect the detent and locking button engagement before applying high torque to confirm the handle is fully seated.