Ogee Washer Standard Cast Iron Finish Hot Dip Galvanized Fits Bolt Sizes 1 1/4 In Inside Dia 1.375 In Outside Dia 4.500 In Thickness 1.250 In Thickness Tolerance +/-0.03 In Color Silver Rockwell Hardness B156 max N/A Meets/Exceeds ASTM A47 Package Quantity 10