Split Lock Washer, Lock Washer Type Split Lock, Finish Plain, Material Stainless Steel, For Screw Size #12, Inside Diameter 0.227 in, Outside Diameter 0.377 in, Maximum Thickness 0.056 in, Minimum Thickness 0.056 in, Dimensional Standards ASME B18.21.1, Material Grade/Class 18-8, Pack Size Small Pack, Rockwell Hardness C35, System of Measurement Inch, Package Quantity 100