LockNut for Threaded RMC/IMC Steel Trade Size 2 1/2 in Overall Length 5/32 in Finish Zinc Plated Insulated No Compatible Conduit Type IMC RMC Conduit Fitting Type Locknut Standards CSA Certified UL Listed For Use With Fittings Threaded RMC For Conduit Type IMC RMC Weight 0.1 lb Color Gray Compatible Conduit Trade Size 2 1/2 in