... copper,iron 3.Certificate:ISO,DIN,AS 4.Moq:50pcs Spring washer 1.Size: M2-M64 or As request 2. ... ISO,DIN,AS4.Moq:50pcs Dimensions details examples: Product name Spring washer SpecificationM2-M64 or as requestMaterialMild carbon steel, medium ... , yellow plated.StandardISO,GB,DIN,JIS,ANSICetificateISO9001-2008,SGS,ROHS FunctionAatomobile,electronic,mechinery After sale serviceIf there are unqualified,we ...