LockNut for Threaded RMC/IMC 316 Stainless Steel Trade Size 1 1/4 in Overall Length 2 3/16 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 0.07 lb Compatible Conduit Trade Size 1 1/4 in Inside Diameter 1.57 in