Split Lock Washer, Standard, Carbon Steel, Finish Zinc, Fits Bolt Sizes M10, Inside Dia. 10.2 mm, Outside Dia. 18.1 mm, Thickness 2.2 mm, Thickness Tolerance +/- 0.15 mm, Rockwell Hardness C44 to C51, General Purpose, Meets/Exceeds DIN 127B, Refills -, Package Quantity 100. This item has been restricted from sale in the following state (s): []