Split Lock Washer, Finish Zinc Plated, Material Steel, For Screw Size 1 3/8 in, Inside Diameter 1.379 in, Outside Diameter 2.158 in, Maximum Thickness 0.264 in, Minimum Thickness 0.264 in, Color Silver, Dimensional Standards ASME B18.21.1, Material Grade/Class Not Graded, Pack Size Small Pack, Rockwell Hardness C38, System of Measurement Inch, Thickness Tolerance -, Package Quantity 275