DIN440V Washers for wood constructions type V with square holes方孔平墊圈 For nom.size M5 M6 M8 M10 M12 M16 M20 M22 a 5.5 6.6 9 11 14 18 22 24 d2 18 22 28 34 44 56 72 80 s 2 2 3 3 4 5 6 6
