This compression series long nut meets the standards for SAE J512, has a length of 31/32 inch, a maximum operating pressure of 200 psi and is designed for the following applications: air, inert gases, non-combustible gases. It has an operating temperature of 65 Degrees F to 250 Degrees F, and is made of brass. In addition, it is a long nut, with an imperial system of measurement, and 9/16"-24 thread. Plus, it has a compression connection type and ⅝ inch hex size.