Grounding Lug Hubs for RMC/IMC, 316 Stainless Steel, Trade Size 3 in, Overall Length 2 29/32 in, Finish Polished, Insulated No, Compatible Conduit Type RMC, IMC, Thread Size 3 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 2 7/8 in, Overall Width 4 in, Weight 3.82 lb, Compatible Conduit Trade Size 3 in, Connection Type Threaded