Cam and Groove Coupling, Socket, Body Material 304 Stainless Steel, Type D, Coupling Size 4 in, Female, Connection Type NPT, Hose Fitting Size 4 in, FNPT, Max. Working Pressure @ 70 F 100 psi, Socket Inside Diameter 4 3/4 in, Gasket Material Nitrile, Overall Length 92 mm, Includes Locking Arm No, Thread Size 4 in -8