Structural Flat Washer, Low Carbon Steel, Hot Dipped Galvanized, Fits Bolt Sizes 3/4 In, Inside Dia. 13/16 In, Thickness 0.122 to 0.177 In, Thickness Tolerance 0.122 to 0.177 In, Rockwell Hardness HRC 26 to 47, Application Used for Structural Leveling, For Use Wit A325 and A490 Bolts For Use Wit, Meets/Exceeds ASTM F436, Package Quantity 1000. This item has been restricted from sale in the following state (s): []