Fender Washer, Flat Washer Type Oversized, Material Stainless Steel, Material Grade/Class 18-8, Finish Plain, For Screw Size 3/8 in, Inside Diameter 0.406 in, Outside Diameter 1 1/2 in, Maximum Thickness 0.073 in, System of Measurement Inch, Minimum Thickness 0.053 in, Inside Diameter Tolerance +/-0.010 in, Material Quality Standards ASTM A582, Outside Diameter Tolerance +/-0.010 in, Pack Size Small Pack, Resistance Properties , , Rockwell Hardness B83