... ,carbon steel,copper,iron 3.Certificate:ISO,DIN,AS 4.Moq:50pcs Lock washer 1.Size: M2-M64 or As request 2 ... :ISO,DIN,AS4.Moq:50pcs Dimensions details examples: Product name Lock washer SpecificationM2-M64 or as requestMaterialMild carbon steel, medium carbon ... , Stainless steel,copper,phosphorization, dacromet,cuprodine.Material grade A2,A4, 4.8,6.8,8.8,12.9Color Plain, blue plated ...