Split Lock Washer, Hi-Collar, Steel, Plain Finish, Fits Bolt Sizes 1 In, Inside Dia 1.024 In, Outside Dia 1.478 In, Thickness 0.250 In, Rockwell Hardness C46, Application For Confined Areas, For Use With Socket Head Cap Screws, Meets/Exceeds ASME B 18.21. 1, Package 25. This item has been restricted from sale in the following state (s): []