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Locknuts for Heavy-Wall RMC & Medium-Wall IMC Metal Conduit
Locknuts fasten threaded heavy-wall RMC and medium-wall IMC metal conduit and connectors to an unthreaded opening in an electrical box or enclosure. They screw onto the end of the conduit or connector after it’s been inserted in the knockout, and have serrated teeth that grip the opening for a tight fit that prevents vibrations from loosening the connection.