Williams JHW1221MSC Combination Wrench 21 Mm 12-point

Product Description

The WILLIAMS COMFORT PRODUCTS JHW1221MSC is a 21 MM combination wrench built for professional fastener work in demanding trade environments. It features a SUPERCOMBO open end with specially designed grooves that redirect wrenching force away from fastener corners, reducing the risk of rounding under load. The SUPERTORQUE 12-point box end applies force to the flat surfaces behind the hex points rather than the corners, allowing higher torque without deforming the fastener. A high-polish chrome finish protects the tool from corrosion in field conditions. This wrench meets ANSI B107.6 and SAE AS 954 specifications, confirming dimensional and performance compliance for professional use.

The JHW1221MSC is suited for mechanical, HVAC, plumbing, and industrial maintenance applications where fastener integrity matters. The 21 MM opening fits metric hex fasteners common in equipment installations, mechanical piping, and commercial HVAC systems. Both the open end and box end provide versatility across tight clearances and standard access situations, making this a practical single-tool solution on a service call or job site.

Key Features

• SUPERCOMBO open end grooves redirect force away from fastener corners to reduce rounding
• SUPERTORQUE 12-point box end contacts flat fastener surfaces, not corners, enabling higher torque application
• Compatible with all common 6-point hex fasteners, offering an advantage over conventional box end wrenches
• High-polish chrome finish for corrosion resistance in field and shop environments
• Meets ANSI B107.6 and SAE AS 954 standards

Compatibility

Designed for use on 21 MM metric hex fasteners. Suitable for 6-point and 12-point fastener applications across mechanical, HVAC, plumbing, and industrial maintenance work.

Installation Notes

This wrench is a hand tool intended for use by qualified trade professionals. Always select the correct size wrench for the fastener to avoid slippage and injury. Inspect the wrench for cracks or damage before each use and do not use a damaged tool. Do not use extension pipes or cheater bars to increase leverage beyond the tool design.

Technical Specifications

• Opening Size: 21 MM
• Box End Type: 12-Point
• Length: 11.7 inches
• Width: 1.7 inches
• Height: 0.7 inches
• Weight: 0.82 pounds
• Finish: High-Polish Chrome
• Standards: ANSI B107.6, SAE AS 954
• Unit of Measure: Each

Standard Information

• Brand: WILLIAMS COMFORT PRODUCTS
• Manufacturer Part Number: JHW1221MSC