Flat Washer Flat Washer Type Oversized Dimensional Standards ASME B18.21.1 Material Stainless Steel Material Grade/Class 18-8 Finish Plain For Screw Size 1 1/4 in Inside Diameter 1.375 in Outside Diameter 3 in Maximum Thickness 0.165 in System of Measurement Inch Minimum Thickness 0.165 in Pack Size Small Pack Package Quantity 5