Conical spring washer 8 DIN 6796 zn 250 000 pcs Conical spring washer 10 DIN 6796 zn 250 000 pcs Conical spring washer 12 DIN 6796 zn 50 000 pcs Conical spring washer 16 DIN 6796 zn 50 000 pcs Conical spring washer 20 DIN 6796 zn 20 000 pcs Thread forming screws 6x10 DIN 7500C zn 100 000 pcs Thread forming screws 6x12 DIN 7500C zn 20 000 pcs Thread forming screws 6x12 DIN 7500D zn 100 000 pcs