DIN 6921 Hexagon flange bolts class 10.9 M 16 x 1,5 x 50 - 50.000 pcs. DIN 6796 Conical spring washers class 10.9 M 10 - 50.000 pcs. M 12 - 30.000 pcs. M 16 - 30.000 pcs.