Plain Flat Washer with Chamfered Edge ISO 7090 in Zinc Flake coated steel with 300HV hardness
Simple flat washer with a chamfered edge, similar to DIN 125 Form B type, but made to the newer ISO 7090 standard. Washers are used in nut and bolt assemblies to improve stress distribution on the bearing surface and span large clearance holes. These washers are as standard 200HV hardness grade suitable for hex head bolts, screws and nuts in property classes up to and including grade 8.8. They are also suitable for case-hardened thread rolling screws. Harder 300HV washers also available for use with hex head bolts, screws and nuts in property classes up to and including grade 10.9. They are also suitable for through hardened socket head cap screws, bolts and nuts.