IMC/Rigid Conduit Nipple; Type Threaded Male/Hex Head; Trade Size 2-1/2 Inch; Diameter 3-3/8 Inch; Length 1-3/8 Inch; Throat Type Non-Insulated; Material Ball Burnished Mirror Smooth Die-Cast Zinc; Standard Package 25; 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