Split Lock Washer, Standard, Carbon Steel, Finish Zinc, Fits Bolt Sizes #8, Inside Dia. 0.174 In., Outside Dia. 0.293 In., Thickness 0.040 In., Rockwell Hardness C38 to C46, Helps Prevent Loosening, For Use With Small Screws, Meets/Exceeds ASME B 18.21. 1, Refills -, Package Quantity 100