Grounding LockNut for Threaded RMC/IMC Steel Trade Size 3 in Overall Length 7/16 in Finish Zinc Plated Compatible Conduit Type RMC Thread Size 3 In.-8 Thread Type NPT Thread Gender Female Conduit Fitting Type Locknut Standards CSA C22.2 #18 UL 514B For Use With Threaded RMC For Conduit Type RMC IMC Overall Height 4 3/16 in Overall Width 4 in Weight 0.23 lb Color Gray Compatible Conduit Trade Size 3 in Connection Type Threaded Includes Bonding Screw