Flat Washer,5/8 Machined F/W .688 X 1.5, Dimensional Standards AMPG 2001 FL.04, Material Stainless Steel, Material Grade/Class 316, Finish Plain, For Screw Size 5/8 in, Inside Diameter 0.688 in, Outside Diameter 1 1/2 in, Maximum Thickness 17/64 in, System of Measurement Inch, Minimum Thickness 15/64 in, Made in North America Made in North America, Material Quality Standards ASTM A276