Use Bridgeport’s 523-DC2 1-1/4" Screw-in Connector to join flex trade size 1-1/4" 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. To install, screw the fitting directly into the flexible metal conduit. Then, secure the connector to a 1-1/4" knockout using Bridgeport’s legendary locknut. Screw-in connectors are UL listed and come in trade sizes 3/8" through 2".