IMC/Rigid Conduit Nipple; Type Threaded Male/Hex Head; Trade Size 4 Inch; Diameter 4-3/4 Inch; Length 1-5/8 Inch; Throat Type Non-Insulated; Material Zinc Electroplated Malleable Iron; Standard Package 5; Approval UL 514B, CSA; Used On IMC/Rigid Conduit; ROHS Compatible; Applicable Standard Federal Specification A-A-50553, NEMA FB-1