IMC/Rigid Conduit Connector; Type Set Screw; Throat Type Plastic Insulated; Trade Size 2-1/2 Inch; Diameter 3-3/16 Inch; Length 3-1/2 Inch; Thread Length 3/8 Inch; Material Zinc Electroplated Steel; Constructional Feature Concrete-Tight; Standard Package 10; Approval UL 514B, UL (Canada and US); Used On Rigid/EMT/IMC Conduit; ROHS Compatible; Applicable Standard Federal Specification A-A-50553, NEMA FB-1; Insulation Temperature Rating 105 Deg C