Crouse Hinds RC50 Rigid Conduit Coupling Brand: Crouse Hinds. Part Number: RC50. EATON Crouse-Hinds Rigid Conduit Coupling, 1/2 in, For Use With: Rigid/IMC Conduit, Steel, Hot Dipped Galvanized, 4.23 in L x 2.88 in W x 1.152 in H. Additional Description: CRHD-RC50 1/2 RIGID CONDUIT COUPLING. Catalog Description: Eaton Crouse-Hinds series rigid conduit coupling, Rigid/IMC, Steel, 1/2..