IMC/Rigid Conduit Coupling; Type 3-Piece, Threaded; Trade Size 3/4 Inch; Diameter 1-5/8 Inch; Length 1-1/2 Inch; Material Zinc Electroplated Steel; Constructional Feature Concrete-Tight; Standard Package 100; Approval UL 514B, UL (Canada and US), CSA; Used On IMC/Rigid Conduit; ROHS Compatible; Applicable Standard Federal Specification A-A-50553, NEMA FB-1