Use Bridgeport’s 521-DCI2 3/4" Insulated Screw-in Connector to join flex trade size 3/4" 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. The screw-in design allows for quick and easy installation. Bridgeport’s legendary locknut secures the fitting to a 3/4" box knockout. 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".