Hexagon head bolts ISO 4017 Material: steel 1.7218 (25CrMo4) or 21CrMoV57 M30x140 660 pcs M24x100 430 pcs M20x80 760 pcs M16x80 512 pcs M12x60 200 pcs M10x60 120 pcs Hexagon nuts DIN 934 Material: steel 1.7218 (25CrMo4) M30 1320 pcs M24 860 pcs M20 1520 pcs M16 1024 pcs M12 400 pcs M10 240 pcs