Halex | sku: 202241105 Halex 2 In. Rigid Conduit Locknuts (50-Pack) The 2 in. Rigid Conduit Locknuts (50-Pack) is ideal for securing threaded fittings to a steel outlet box. These locknuts are constructed of steel and are zinc-plated for rust resistance. Use indoor or outdoor. • Secures rigid and IMC conduit to a... Log in for pricing