Appleton BU250 Malleable Iron Bushings

Appleton BU250 Conduit Bushing is a 2-1/2 in trade-size threaded bushing designed to terminate rigid metal conduit (RMC) or IMC to a box or enclosure. Cast from malleable iron with a zinc electroplate finish, it measures 3.19 in in diameter and 0.75 in high, with an inside diameter of 63.5 mm (2.5 in) to accommodate the conduit entering the hub. This non-grounding bushing is intended for use with a locknut to terminate conduit into a box or enclosure, providing a smooth pulling surface while protecting threads during installation. It carries UL 514B and E14814 listings, CSA C22.2 No. 18.3, CSA File 065178, and NEMA FB-1 compliance, reflecting its suitability for standard electrical installations. The temperature rating is 302°F (150°C), making it appropriate for indoor and sheltered environments where moderate heat exposure is expected. Typical applications include terminating rigid metal conduit or IMC to electrical boxes or enclosures in commercial or industrial settings, where a robust malleable-iron, zinc-finished threaded bushing ensures durable, secure connections.