LockNut for Threaded RMC/IMC 316 Stainless Steel Trade Size 2 1/2 in Overall Length 3 9/16 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 0.16 lb Compatible Conduit Trade Size 2 1/2 in Inside Diameter 2.76 in