Williams JHW1218YSC 9/16 Inch Combination Wrench Hi-vis Yellow

Product Description

The WILLIAMS COMFORT PRODUCTS JHW1218YSC is a 9/16 inch combination wrench built for professional-grade fastener work in demanding trade environments. It features a SUPERCOMBO open end with specially designed grooves that redirect wrench force away from fastener corners, and a SUPERTORQUE box end that applies wrenching force to the flat surfaces behind hex points rather than the corners themselves. This design reduces the risk of rounding or deforming fasteners under high torque. The wrench measures 8.86 inches in length and weighs 0.309 pounds. It is finished in Hi-Vis Yellow for easy identification on a busy job site. Electricians, pipefitters, and mechanical contractors are the primary users.

This wrench is suited for residential and commercial maintenance, mechanical assembly, and equipment service work where fastener integrity is critical. The box end meets or exceeds aerospace specification AS 954 for 12-point fasteners as defined by AS 870, making it appropriate for precision torque applications where accurate torque-to-tension relationships matter. The open end and box end openings are identical at 9/16 inch, which simplifies tool selection. The SUPERTORQUE box end is also compatible with all common 6-point hex fasteners, offering an advantage over conventional box end wrenches in terms of flexibility and reduced fastener damage risk.

Key Features

• SUPERCOMBO open end with grooves that redirect force away from fastener corners
• SUPERTORQUE box end contacts flat surfaces behind hex points, not the corners, reducing rounding under high torque
• Meets or exceeds aerospace specification AS 954 for 12-point fasteners per AS 870
• Compatible with all common 6-point hex fasteners in addition to 12-point applications
• Box end and open end openings are identical at 9/16 inch
• Hi-Vis Yellow finish for fast visual identification on the job site
• Conforms to ANSI B107.6 Federal Specification

Compatibility

Designed for use with 9/16 inch hex fasteners in both 6-point and 12-point configurations across general mechanical, electrical, and plumbing service applications.

Installation Notes

This wrench is a hand tool requiring no installation. Before use, confirm the opening size matches the fastener to avoid slippage. Power down or de-energize equipment and shut off any fluid supply before performing fastener work on live systems. Inspect the wrench for cracks or deformation before applying high torque, and do not extend the handle with a cheater bar, as this can exceed the tool's rated load range.

Technical Specifications

• Opening Size: 9/16 inch
• Length: 8.86 inches
• Width: 1.38 inches
• Height: 0.59 inches
• Weight: 0.309 pounds
• Finish: Hi-Vis Yellow
• Open End Type: SUPERCOMBO
• Box End Type: SUPERTORQUE
• Standard: ANSI B107.6
• Aerospace Specification: AS 954 (12-point per AS 870)
• Unit of Measure: Each

Standard Information

• Brand: WILLIAMS COMFORT PRODUCTS
• Manufacturer Part Number: JHW1218YSC