LockNut for Threaded RMC/IMC, 316 Stainless Steel, Trade Size 1 1/2 in, Overall Length 2 15/32 in, Finish Polished, Compatible Conduit Type RMC, IMC, Conduit Fitting Type Locknut, Standards File #E308159, UL514B, For Use With Threaded Metallic Conduit, For Conduit Type RMC, IMC, Weight 0.08 lb, Compatible Conduit Trade Size 1 1/2 in, Inside Diameter 1.81 in