d 1 d 1 d 1 l 2 l 1 Øh 8 Øh 8 decimal A520 Inch mm Inch mm mm 11.60 0.4567 47 95 A52011.6 11.70 0.4606 47 95 A52011.7 11.80 0.4646 47 95 A52011.8 11.90 0.4685 51 102 A52011.9 15/32 11.91 0.4689 51 102 A52015/32 12.00 0.4724 51 102 A52012.0 12.10 0.4764 51 102 A52012.1 12.20 0.4803 51 102 A52012.2 12.30 0.4843 51 102 A52012.3 31/64 12.30 0.4843 51 102 A52031/64 12.40 0.4882 51 102 A52012.4 12.50 0.4921 51 102 A52012.5 12.60 0.4961 51 102 A52012.6 12.70 0.5000 51 102 A52012.7 1/2 12.70 0.5000 51 102 A5201/2 12.80 0.5039 51 102 A52012.8 12.90 0.5079 51 102 A52012.9 13.00 0.5118 51 102 A52013.0 57