Armstrong 89100 Flare Nut Wrench Set 5 Piece Ratcheting

Product Description

The ARMSTRONG 89100 is a 5-piece flare nut wrench set designed for use on tubing fittings, refrigerant lines, and fuel lines where a standard open-end wrench risks rounding soft fitting flats. Each wrench features a ratcheting mechanism and a flexible head, allowing the technician to work in tight or offset positions without breaking and repositioning the tool. The set covers five double-ended inch sizes ranging from 1/4 inch up to 7/8 inch, addressing the most common flare and compression nut dimensions encountered in HVAC, refrigeration, and plumbing service. A chrome-plated finish provides corrosion resistance. The complete set ships in a storage tray.

This set is suited for licensed HVAC technicians, refrigeration mechanics, and plumbers working on copper tubing systems, refrigerant line sets, gas supply lines, and hydronic piping. The ratcheting flexible-head design reduces knuckle clearance requirements and speeds up repetitive work on manifold connections, service valves, and union fittings in residential and light commercial applications. The inch sizing covers the flare nut dimensions most commonly found on standard ACR tubing and domestic plumbing fittings.

Key Features

• Ratcheting mechanism speeds flare nut removal and installation in confined spaces
• Flexible head allows offset access without repositioning the wrench
• Chrome-plated finish resists corrosion on tool surfaces
• Five double-ended wrenches cover 10 inch sizes from 1/4 inch through 7/8 inch
• Includes storage tray to keep the set organized in a service bag or toolbox
• Limited lifetime warranty from ARMSTRONG

Compatibility

Designed for use on inch-dimensioned flare nuts and compression fittings commonly found on ACR copper tubing, gas supply lines, and domestic plumbing connections.

Installation Notes

Flare nut wrenches should be used by qualified HVAC technicians or plumbers following applicable codes including IFGC and IPC. Always isolate and depressurize the line or system before loosening any fitting. Select the wrench size that fits the flats of the nut fully to avoid deforming soft brass or aluminum fittings. Inspect the ratcheting mechanism for dirt or debris and clean as needed before use.