Conduit Hanger, Type Conduit Hanger with Carriage Bolt and Nut, Trade Size 2-1/2 Inch, Installation Carriage Bolt with Nut, Conduit Type 2-1/2 Inch IMC/EMT/Rigid, Material Steel, Finish Zinc Plated, Size 1-1/4 Inch D x 4-7/32 Inch H, Mounting Hole Size 5/16 Inch (Bolt)