1.Size:M3-M76 2.Material:Carbon Steel, Mild Steel, C1008, ... ,hot dip galv.etcMaterialCarbon Steel/Alloy Steel/Stainless SteelGrade4.6, 4.8, 5.6, 5.8,6.8, 8.8, 10.9 and 12.9standardDIN ,ANSI/ASME,BS,GB ... nutsPacking---In wooden cases or according to customers' requirements . Grade 4.6 Bolt And Nut