Flat Washer, Flat Washer Type Standard, Dimensional Standards ASME B18.22.1, Material Stainless Steel, Material Grade/Class 18-8, Finish Plain, For Screw Size 5/16 in, Inside Diameter 0.344 in, Outside Diameter 3/4 in, Maximum Thickness 3/32 in, System of Measurement Inch, Minimum Thickness 3/32 in, Color Silver, Maximum Temperature 302 Degrees F, Minimum Temperature -58 Degrees F, Pack Size Bulk Pack, Package Quantity 1900