Split Lock Washer, Extra Duty, Steel, Finish Plain, Fits Bolt Sizes 7/8 In, Inside Dia. 0.878 In, Outside Dia. 1.571 In, Thickness 0.285 In, Thickness Tolerance + 0.020 In, Color Black, Rockwell Hardness C38-46, N/A, Meets/Exceeds ASME B 18.21. 1, Package Quantity 25. This item has been restricted from sale in the following state (s): []