Cam and Groove Coupling Socket Body Material Aluminum Type D Coupling Size 3 in Female Connection Type NPT Hose Fitting Size 3 in FNPT 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 1/4 in Includes Locking Arm Yes Thread Size 3 in -8 Plug Length 3 23/32 in