Hot Dipped Galavanized Hex NutsPan Head Machine Screw Zinc Narrow Your Choices Diameter (Inch) 1/4" - 20 5/16" - 18 3/8" - 16 1/2" - 13 9/16" - 12 5/8" - 11 3/4" - 10 7/8" - 9 1" - 8 1 1/8" - 7 1 1/4" - 7Length (Inch) Material Available Sizes:1" - 81/2" - 131/4" - 203/4" - 103/8" - 165/16" - 185/8" - 117/8" - 99/16" - 121 1/4" - 71 1/8" - 7