... ,C1035,C1045,etc 3.Standard:ISO,DIN,ASME,etc Carbon Steel/Alloy Steel Bolt And Nut sizeM3-M76Faceplain,zinc plated,black oxide,hot dip ... galv.etcMaterialCarbon Steel/Alloy Steel/Stainless SteelGrade4.6, 4.8, 5.6 ... and nutsPacking---In wooden cases or according to customers' requirements . Carbon Steel/Alloy Steel Bolt And Nut