SAE Washer, Flat Washer Type SAE, Dimensional Standards ASME B18.22.1, Material Steel, Material Grade/Class Case Hardened, Finish Black Oxide, For Screw Size #2, Inside Diameter 0.078 in, Outside Diameter 3/16 in, Maximum Thickness 5/32 in, System of Measurement Inch, Minimum Thickness 5/32 in, Pack Size Small Pack, Rockwell Hardness RB40, Thickness Tolerance +/-0.006 in, Package Quantity 100