IMC/Rigid Conduit Bushing; Type Threaded Female; Trade Size 4 Inch; Diameter 4-13/16 Inch; Height 3/4 Inch; Temperature Rating 150 Deg C; Material Plain Black Finish Plastic; Standard Package 20; Approval UL 514B, CSA; Used On IMC/Rigid Conduit; ROHS Compliant; Applicable Standard Federal Specification A-A-50553, NEMA FB-1; Used with Locknut