IMC/Rigid Conduit Nipple; Type Threaded Male/Hex Head; Trade Size 3 Inch; Diameter 4-1/16 Inch; Length 1-1/2 Inch; Throat Type Insulated; Material Ball Burnished Mirror Smooth Die-Cast Zinc; Standard Package 10; 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; Insulation Temperature Rating 105 Deg C