Lock Washer, Internal Tooth, 316 Stainless Steel, Finish Plain, Fits Bolt Sizes 1/4 In, Inside Dia. 0.256 In, Outside Dia. 0.478 In, Thickness 0.025 In, Thickness Tolerance 0.028 to 0.023 In, Color Silver, Rockwell Hardness B85, N/A, Meets/Exceeds ASME B 18.21. 1, Package Quantity 25. This item has been restricted from sale in the following state (s): []