Top Quality Steel Rivet Nut Rivnut Insert Nutsert - Open end 5/16-18 UNC Large Flange Material: Steel Finish: Yellow Zinc Body Diameter: 0.433" Total Length: 0.709" Application hole size: 0.437" Grip Range 0.04” - 0.16” Package: 20 pcs in a bag * PICTURE FOR REFERENCE ONLY.