Flat Washer Flat Washer Type Oversized Material Stainless Steel Material Grade/Class 18-8 Finish Plain For Screw Size 1 1/4 in Inside Diameter 1.313 in Outside Diameter 2 3/4 in Maximum Thickness 0.125 in System of Measurement Inch Minimum Thickness 0.125 in Color Silver Inside Diameter Tolerance +/-0.010 in Material Quality Standards ASTM A582 Outside Diameter Tolerance +/-0.010 in Pack Size Small Pack Resistance Properties Chemical Resistant Corrosion Resistant