Flat Washer Flat Washer Type SAE Dimensional Standards ASME B18.21.1 SAE Material Stainless Steel Material Grade/Class 316 Finish Plain For Screw Size 1 3/8 in Inside Diameter 1.5 in Outside Diameter 2 3/4 in Maximum Thickness 0.165 in System of Measurement Inch Minimum Thickness 0.165 in Maximum Temperature 302 Degrees F Minimum Temperature -58 Degrees F Pack Size Small Pack Rockwell Hardness Not Rated Package Quantity 5