Grounding Lug Hubs for RMC/IMC 316 Stainless Steel Trade Size 4 in Overall Length 3 1/32 in Finish Polished Insulated No Compatible Conduit Type RMC IMC Thread Size 4 in Thread Type NPSL NPT Thread Gender Female to Male Conduit Fitting Type Hub Standards UL 514B/NEMA and NEC Compliance For Use With Threaded Metallic Conduit For Conduit Type RMC IMC Overall Height 3 25/32 in Overall Width 5 in Weight 5.32 lb Compatible Conduit Trade Size 4 in Connection Type Threaded