SAE Washer, Flat Washer Type SAE, Dimensional Standards ASME B18.22.1 Type A Narrow, SAE Standard, Material Steel, Material Grade/Class Grade 2, Finish Plain, For Screw Size 1 1/2 in, Inside Diameter 1.563 in, Outside Diameter 3 in, Maximum Thickness 5/32 in, System of Measurement Inch, Minimum Thickness 5/32 in, Pack Size Small Pack, Rockwell Hardness 38HRC, Thickness Tolerance +/-0.027 in, Package Quantity 200