Split Lock Washer, Light Duty, Steel, Finish Plain, Fits Bolt Sizes 3/8 In, Inside Dia. 0.377 In, Outside Dia. 0.670 In, Thickness 0.070 In, Thickness Tolerance + 0.010 In, Color Black, Rockwell Hardness C38-46, N/A, Meets/Exceeds ASME B 18.21. 1, Package Quantity 100. This item has been restricted from sale in the following state (s): []