The 3887 insulated threaded grounding bushing features a 3" aluminum zinc plated construction, compatible with 8-2/0 AWG ground lug size. Rated for 150°C temperature, this thermoplastic bushing includes a set screw and is designed for use with RMC (Rigid Metal Conduit) and IMC (Intermediate Metal Conduit). Dimensions: 4.9" H x 8.1" W x 9.9" D.