Conduit Grounding Bushing; Type Threaded; Trade Size 6 Inch; Wire Size 6 AWG Solid to 250 KCMIL Stranded; Lug Type Tin Electroplated 6061-T6 Aluminum Alloy; Throat Type Insulated; Diameter 7-3/16 Inch; Height 1-1/8 Inch; Material Zinc Electroplated Malleable Iron; Standard Package 5; Approval UL 514B, UL (Canada and US); Used On IMC/Rigid Conduit; ROHS Compatible; Applicable Standard Federal Specification A-A-50553, NEMA FB-1; Insulator Material Nylon; Insulation Temperature 150 Deg C