UL Zinc Locknuts / Locknut Trade size: 1/2"-- 4" UL 514B Material: Zinc Apply: Rigid or IMC conduit, ... threaded fittings UL Zinc Locking NutsThe Hanysen 1/2 - 4 in. Conduit Locknuts are designed to secure rigid and IMC ... & COVER, WEATHERPROOF JUNCTION BOX & COVER, STEEL JUNCTION BOX/ EXTENSION, DUPLEX/ TOGGLE SWITCH COVERCLAMP AND HANGERCONDUIT HANGER, STRUT CLAMP, CLEVIS HANGER, SWIVEL LOOP ...