Material:Carbon Steel,Stainless steel SUS201,SUS304,SUS316 Size:M1.6-16 Length:M3-100 Standards: DIN, GB, ISO, ANSI,etc Product NameBolt,Nut,Auto Bolt&Nut,No-Standard Fastener etcMaterialCarbon Steel,35#,45#,40Cr,35CrMo,Stainless Steel,etcSizeM4-M22,All size could be producted as customer needProduct DevolpmentDevelop products according to Drawings or SamplesGrade4.8,8.8,10.9,12.9,SUS304, ...