Flat Washer Flat Washer Type Oversized Dimensional Standards ASME B18.22.1 Material Stainless Steel Material Grade/Class 18-8 Finish Plain For Screw Size 1 1/8 in Inside Diameter 1.156 in Outside Diameter 2 1/4 in Maximum Thickness 0.219 in System of Measurement Inch Minimum Thickness 0.219 in Maximum Temperature 302 Degrees F Minimum Temperature -58 Degrees F Pack Size Small Pack Package Quantity 5