Square Washer, Dimensional Standards AMPG 2017 SQ.01, Material Stainless Steel, Material Grade/Class 18-8, Finish Plain, For Screw Size 1 in, Inside Diameter 1.063 in, Outside Diameter Not Applicable, Maximum Thickness 3/16 in, System of Measurement Inch, Minimum Thickness 3/16 in, Material Quality Standards ASTM A582, Pack Size Small Pack, Resistance Properties Corrosion-Resistant, Thickness Tolerance +/-0.031 in