... .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 Galv, Nickel Plating,PackingPlastic bag ... , quantity, Material or Grade, surface, If it is special and Non-standard products, please supply the Drawing or Photos or Samples to ...