Williams Comfort Products 10658-TH Flare Nut Wrench

Product Description

The WILLIAMS COMFORT PRODUCTS 10658-TH is a flare nut wrench sized for 19mm and 21mm fasteners, designed for use on flare fittings commonly found in HVAC refrigerant lines, plumbing connections, and fuel line assemblies. Unlike an open-end wrench, a flare nut wrench wraps around the fitting on multiple faces, reducing the risk of rounding soft flare nuts during installation or removal. Weighing 0.43 pounds, this hand tool is a practical addition to any service tech's kit where fitting integrity matters.

Flare nut wrenches in this size range are commonly used when working on refrigerant suction and liquid lines, gas supply connections, and hydraulic fittings. The 19mm and 21mm sizing covers a range of metric flare and union nuts encountered in residential and light commercial HVAC systems, gas appliance hookups, and plumbing rough-in work. HVAC technicians, gas fitters, and plumbers reach for this tool when standard open-end wrenches would risk damaging the fitting.

Key Features

• Dual-size wrench fits 19mm and 21mm flare nut fasteners
• Flare nut profile grips multiple faces to reduce rounding on soft fittings
• Compact and lightweight at 0.43 pounds for use in tight service spaces
• Sold individually as a single unit

Compatibility

Designed for use with metric flare nut and union fittings in HVAC, plumbing, and gas line applications where 19mm or 21mm fastener sizes are required.

Installation Notes

Always shut off the refrigerant system, gas supply, or water supply before loosening or tightening flare fittings. Position the wrench fully seated on the fitting before applying torque to avoid slipping. HVAC and gas line work involving flare connections should be performed by a licensed technician in accordance with applicable local codes and manufacturer guidelines.

Technical Specifications

• Wrench Size: 19mm x 21mm
• Weight: 0.43 pounds
• Sold As: Each
• UPC: 662459974716

Standard Information

• Brand: WILLIAMS COMFORT PRODUCTS
• Manufacturer Part Number: 10658-TH