ISO7380 1.Material:SS304,SS316 2.Size:M2-M12 3.Length:2-150MM Description; ISO7380 ISO7380 Brand NameGWOriginal of PlaceShanghai ChinaMaterialCarbon steel ,stainless steel, brass and etc.Standardstandard fasteners (GB, DIN, ANSI,JIS AND ) and non-standard.GradeClass 4.8, Class 6.8, Class 8.8, Class 10.9, Class 12.9SurfaceBlack, White or Blueness Zinc (Cr.3 or Cr.6), Yellow Zinc, Dacromet, Hot Dip ...