Williams Comfort Products JHW1721 Open End Wrench 5/16x3/8

Product Description

The WILLIAMS COMFORT PRODUCTS JHW1721 is a double-opening open end wrench designed for fastener access in tight or confined service environments. The wrench features two openings sized at 5/16 inch and 3/8 inch, each with a 45-degree chamfer on the ends to allow quick, positive seating on fastener heads. A continuous arc jaw design resists spreading under load and delivers greater structural strength compared to an OVO-style profile. The satin-chrome finish reduces glare, provides a secure grip, and wipes clean with minimal effort. This is a standard, single-unit hand tool suited for professional trade use across HVAC, plumbing, and mechanical service work.

The JHW1721 is appropriate for residential and light commercial service calls where 5/16-inch and 3/8-inch fasteners are common — including equipment panels, valve packing nuts, bracket hardware, and similar small-fastener applications. Its compact profile makes it practical for technicians working in equipment rooms, utility closets, and around installed mechanical systems. The wrench meets ANSI B107.6 Federal Specification standards, confirming dimensional and strength compliance for professional-grade hand tools.

Key Features

• Dual openings: 5/16 inch and 3/8 inch in a single standard wrench
• 45-degree chamfer on both wrench ends for fast, accurate fastener placement
• Continuous arc jaw design resists spreading and outperforms OVO-profile wrenches in strength
• Satin-chrome finish for low glare, reliable grip, and easy cleaning
• Meets ANSI B107.6 Federal Specification for open end wrenches

Compatibility

Designed as an OEM-style open end wrench for general mechanical, HVAC, and plumbing service applications requiring 5/16-inch or 3/8-inch fastener engagement.

Installation Notes

This wrench is a hand tool intended for use by licensed HVAC technicians, plumbers, electricians, and mechanical service professionals. Always de-energize electrical equipment and shut off fluid supply lines before using hand tools on live systems or pressurized components. Use the correct opening size for the fastener to avoid rounding heads. No power tools, torque equipment, or specialty adapters are required for standard use of this wrench.

Technical Specifications

• Opening Sizes: 5/16 inch x 3/8 inch
• Finish: Satin-Chrome
• Standard: ANSI B107.6
• Length: 12 inches
• Height: 0.8 inches
• Width: 0.3 inches
• Weight: 0.07 pounds
• Unit of Measure: Each

Standard Information

• Brand: WILLIAMS COMFORT PRODUCTS
• Manufacturer Part Number: JHW1721