Split Lock Washer, Hi-Collar, Steel, Plain Finish, Fits Bolt Sizes 3/4 In, Inside Dia 0.766 In, Outside Dia 1.105 In, Thickness 0.218 In, Rockwell Hardness C46, Application For Confined Areas, For Use With Socket Head Cap Screws, Meets/Exceeds ASME B 18.21. 1, Package 50. This item has been restricted from sale in the following state (s): []