4-inch Galvanized Steel Sioux Chief 515 series clevis hangers can be used where necessary to suspend piping overhead, using 3/8 inch threaded rod and in accordance with national code requirements on light commercial applications.; ; Brand Name: Sioux Chief Size: 4 in. Material: Galvanized Steel Product Type: Clevis Hanger Gauge: 11 Ga. Packaging Type: Bagged Number in Package: 1 pk Thickness: 1.25 in.