Washers Plain Washers Standard: DIN125,DIN125B,DIN126,DIN134,DIN14399-6, DIN1440, DIN1441,DIN433,DIN440,DIN6340,DIN6916,DIN7349,DIN7989-1, ,ISO7089,ISO7090,ISO7092,ISO7093.1,ISO7094,ANSI/ASME B18.22.1,ANSI ASME B18.22.1(SAE/USS),ASTM F436Specs: ID from 3mm to 36mm, from 6# to 2”Hardness: 100HV-430HV,38-45HRCMaterial:carbon steel, SS304,SS316Coating:plain,zinc,yellow zinc,black,HDG, nickle,mechanical plating,dacromet Lock Washers Standard: DIN6797A,DIN6797J, DIN6798A,DIN6798J, ANSI/ASME B18.21.1Specs: ID from 3mm to 30mm, from 8# to 3/8”Hardness: 100HV-300HVMaterial:carbon steel, SS304,SS316Coating:plain,zinc,yellow zinc,black,dacromet Spring Washers Standard: DIN127,DIN127B,DIN7980, ANSI/ASME B18.21.1Specs: ID from 3mm to 36mm, from 8# to 2”Hardness: 100HV-530HVMaterial:carbon steel, SS304,SS316Coating:HDG,zinc,white zinc,yellow zinc, black,dacromet Square Washers Standard: DIN434,DIN435,DIN436, DIN6917,DIN6918, ASTM F436,ANSI/ASME B18.2.6,ANSI/ASME B18.23.1,ANSI/ASME B18.16MSpecs: ID from 6mm to 30mm, from 1/2” to 1.1/2”Hardness: 100HV-140HV,38-45HRCMaterial:carbon steel, SS304,SS316Coating:zinc,yellow zinc