Cam and Groove Coupling Socket Body Material Aluminum Type B Coupling Size 3 in Male Connection Type NPT Hose Fitting Size 3 in MNPT Max Working Pressure @ 70 F 250 psi Plug Outside Dia 5 11/16 in Socket Inside Diameter 3 5/8 in Gasket Material Nitrile Overall Length 4 in Includes Locking Arm Yes Thread Size 3 in -8