Hexagon head screws with flange similar DIN 6921/8.8 zinc plated M 10 = width across flats 17 mm M 12 = width across flats 19 mm 5.000 pcs M 10 x 20 15.000 pcs M 10 x 25 5.000 pcs M 10 x 30 2.000 pcs M 12 x 25 2.000 pcs M 12 x 30