This Eaton Weatherhead 105X3 inverted flare fitting nut is suitable for use with flare tube fittings and 3/16" outside diameter (OD) tubes in hydraulic fluid transfer applications. It is made of steel for strength and durability and meets Society of Automotive Engineers (SAE) 040110 specifications for tube fittings. This inverted flare fitting nut is suitable for a wide range of industrial and commercial hydraulic applications with a matching flare tube fitting and tube.

Tube fittings are components used for connecting, branching, terminating, and changing the direction of tubing in pneumatic and hydraulic systems. They are made of brass, stainless steel, PBT (polybutylene terephthalate), and other materials that resist corrosion and wear. Tube fittings have various types of connections, including threaded, welded, barbed, and push-to-connect (also called one-touch). Push-to-connect connections do not require tools or sealants. Tube fittings are used in various applications, including machine tools, airplane and truck controls, and automated production lines, among others.

Eaton manufactures electrical, hydraulic, and mechanical power equipment. The company, founded in 1911, is headquartered in Dublin, Ireland.