Use Bridgeport’s 522-DCI2 1" Insulated Screw-in Connector to join flex trade size 1" flexible metal conduit (FMC) to an electrical box or enclosure. Die cast zinc connectors guarantee a precise fit, finish and excellent corrosion resistance for use in harsh environments. To install, simply screw the connector directly into the conduit and then fasten the connector to a 1" knockout using the provided locknut. The connector’s insulated throat protects inner wiring up to a temperature of 105°C. Insulated screw-in connectors are UL listed and come in trade sizes 3/8" through 2".