IMC/Rigid Conduit Bushing; Type Threaded Female; Trade Size 2-1/2 Inch; Diameter 3-1/8 Inch; Height 5/8 Inch; Temperature Rating 105 Deg C; Material Plain Plastic; Standard Package 25; Approval UL 514B, CSA; Used On IMC/Rigid Conduit; ROHS Compliant; Applicable Standard Federal Specification A-A-50553, NEMA FB-1; Used with Locknut