Sealing LockNut for Threaded RMC/IMC Steel Trade Size 3 in Overall Length 3/16 in Finish Zinc Plated Compatible Conduit Type IMC Rigid Conduit Thread Size 3 In.-8 Thread Type NPT Conduit Fitting Type Locknut Standards CSA Certified UL 514B UL Listed For Use With Threaded RMC For Conduit Type IMC RMC Overall Height 4 1/4 in Overall Width 4 1/4 in Weight 0.16 lb Compatible Conduit Trade Size 3 in Connection Orientation Straight Connection Type Threaded Inside Diameter 3.42 in