This Eaton Weatherhead 66X4 compression fitting adapter is suitable for connecting a tube to a pipe in a range of fluid transfer applications. It has 1/8" female National Pipe Taper (NPT) threads on one end and 7/16-24 Society of Automotive Engineers (SAE) threads on the other for use with 1/4" outside diameter (OD) tubes and matching compression sleeves (not included). The fitting is made of CA360 brass for strength and resistance to corrosion, has an operating temperature range of -65 to +250 degrees F (-53 to +121 degrees C), and meets SAE 060103BA specifications for tube fittings. This compression fitting adapter is suitable for use in a wide range of industrial and commercial fluid transfer applications with matching components.

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.