Bulon cabeza hexagonal 
Tornillo cabeza cilindrica hexagono interno
acero clase 10.9MA pul. acero 12.9 UNC - UNF - BSW
Medida Pase UNC   Medida UNC UNF   Medida UNC UNF   Medida UNC UNF   Medida UNC UNF
                                     
8 X 30 1.25   5/32 x 1 1/2 5.74     5/16 x 5 39.11     1/2 x 6 1/2 168.61     7/8 x 4 120.94  
8 X 35 1.25   3/16x  1/4 11.46 13.32   3/8 x 1/2 4.76 34.35   1/2 x 7 172.20     7/8 x 4 1/2 134.59  
8 X 40 1.25   3/16 x 5/16 10.99     3/8 x 5/8 5.20     1/2 x 8 228.46     7/8 x 5 145.09  
8 X 45 1.25   3/16 x 3/8 3.21 6.86   3/8 x 3/4 5.55 20.54   5/8 x 1 23.07     7/8 x 5 1/2 158.61  
8 X 50 1.25   3/16 x 1/2 3.28 5.04   3/8 x 7/8 6.09 23.07   5/8 x 1 1/4 25.83     7/8 x 6 169.10  
8 X 60 1.25   3/16 x 5/8 3.48 5.30   3/8 x 1 6.35 24.73   5/8 x 1 1/2 28.61     7/8  x 6 1/2 234.78  
8 X 70 1.25   3/16 x 3/4 3.77 5.69   3/8 x 1 1/4 7.47 25.61   5/8 x 1 3/4 31.39     7/8 x 7 242.44  
8 X 80 1.25   3/16 x 7/8 3.94 5.88   3/8 x 1 1/2 8.29 26.45   5/8 x 2 34.13     7/8 x 8 552.84  
8 X 90 1.25   3/16 x 1 4.03 6.00   3/8 x 1 3/4 9.63 27.42   5/8 x 2 1/4 36.90     7/8 x 10 618.25  
8 X 100 1.25   3/16 x 1 1/4 4.32 6.03   3/8 x 2 10.55 23.18   5/8 x 2 1/2 38.86     1 x 1 1/2 88.34  
8 X 110 1.25   3/16 x 1 1/2 4.48 6.83   3/8 x 2 1/4 11.83 24.54   5/8 x 2 3/4 41.36     1 x 1 3/4 108.60  
8 X 120 1.25   3/16 x 1 3/4 5.10 7.64   3/8 x 2 1/2 12.76 26.65   5/8 x 3 43.96     1 x 2 115.62  
10 X 40 1.50   3/16 x 2 5.24 7.81   3/8 x 2 3/4 14.03     5/8 x 3 1/2 50.55     1 x 2 1/4 122.31  
10 X 45 1.50   3/16 x 2 1/4 11.05     3/8 x 3 14.99     5/8 x 4 57.15     1 x 2 1/2 129.33  
10 X 50 1.50   3/16 x 2 1/2 11.70     3/8 x 3 1/4 34.19     5/8 x 4 1/2 62.25     1 x 2 3/4 136.34  
10 X 60 1.50   1/4 x 3/8 4.92 7.72   3/8 x 3 1/2 17.19     5/8 x 5 68.86     1 x 3 143.05  
10 X 70 1.50   1/4 x 1/2 1.70 6.15   3/8 x 4 19.43     5/8 x 5 1/2 75.43     1 x 3 1/2 160.27  
10 X 80 1.50   1/4 x 5/8 1.88 6.20   3/8 x 4 1/2 21.66     5/8 x 6 80.56     1 x 4 173.03  
10 X 90 1.50   1/4 x 3/4 2.07 6.83   3/8 x 5 44.73     5/8 x 6 1/2 248.66     1 x 4 1/2 191.21  
10 X 100 1.50   1/4 x 7/8 2.26 7.89   3/8 x 5 1/2 46.68     5/8 x 7 268.03     1 x 5 203.96  
10 X 110 1.50   1/4 x 1 2.45 8.02   3/8 x 6 48.44     5/8 X 8 288.42     1 x 5 1/2 221.82  
10 X 120 1.50   1/4 x 1 1/4 2.84 8.18   7/16 x 3/4 21.37     5/8 x 10 324.81     1 x 6 235.22  
12 X 40 1.75   1/4 x 1 1/2 3.41 9.07   7/16 x 1 14.63 23.18   3/4 x 1 38.40     1 x 6 1/2 298.57  
12 X 45 1.75   1/4 x 1 3/4 3.80 9.50   7/16 x  1 1/4 16.56 25.54   3/4 x 1 1/4 39.17     1 x 7 312.34  
12 X 50 1.75   1/4 x 2 4.41 10.08   7/16 x  1 1/2 17.89 25.65   3/4 x 1 1/2 43.22     1 x 8 449.47  
12 X 60 1.75   1/4 x 2 1/4 4.78     7/16 x  1 3/4 18.79 27.32   3/4 x 1 3/4 47.26     1 x 10 497.93  
 12 X 65 1.75   1/4 x 2 1/2 5.39     7/16 x 2 19.39 28.22   3/4 x 2 51.25      
12 X 70 1.75   1/4 x 2 3/4 5.77     7/16 x 2 1/2 24.91 30.51   3/4 x 2 1/4 55.24     Tornillo cabeza cilindrica
12 X 80 1.75   1/4 x 3 6.35     7/16 x 3 28.78     3/4 x 2 1/2 62.48     hexagono interno Acero
12 X 90 1.75   1/4 x 3 1/4 21.52     7/16 x 3 1/2 30.67     3/4 x 2 3/4 63.28     12.9 BSW
12 X 100 1.75   1/4 x 3 1/2 22.03     1/2 x 3/4 12.31 26.07   3/4 x 3 66.37     1/2 x 3/4 12.31  
12 X 110 1.75   1/4 x 4 24.74     1/2 x 7/8 12.54     3/4 x 3 1/2 73.89     1/2 x 7/8 12.54  
12 X 120 1.75   5/16 x 3/8 13.25   1/2 x 1 13.93 26.86 3/4 x 4 84.04     1/2 x 1 13.93  
Tornillo Cabeza Cilindrica 5/16 x 1/2 2.97 29.74 1/2 x 1 1/4 15.57 28.14 3/4 x 4 1/2 91.57     1/2 x 1 1/4 15.57  
hexagono interno 5/16 x 5/8 3.29 29.92 1/2 x 1 1/2 17.20 29.42 3/4 x 5 101.64     1/2 x 1 1/2 17.19  
Acero 12.9 5/16 x 3/4 3.61 19.69 1/2 x 1 3/4 18.82 30.82 3/4 x 5 1/2 109.08     1/2 x 1 3/4 18.82  
Medida UNC UNF 5/16 x 7/8 3.93 19.80 1/2 x2 20.44 31.79 3/4 x 6 119.31     1/2 x 2 20.44  
5/16 x 1 4.25 20.07 1/2 x 2 1/4 23.00 33.33 3/4 x 6 1/2 164.81     1/2 x 2 1/4 23.00  
1/8 x 1/4 2.91   5/16 x 1 1/4 4.84 20.59 1/2 x 2 1/2 24.66 34.72 3/4 x 7 178.79   1/2 x 2 1/2 24.65  
1/8 x 5/16 3.02   5/16 x 1 1/2 5.45 21.12 1/2 x 2 3/4 26.31 36.62 3/4 x 8 367.81   1/2 x 2 3/4 26.31  
1/8 x 3/8 3.03   5/16 x 1 3/4 6.41   1/2 x 3 28.97 38.34 3/4 x 10 515.88   1/2 x 3 28.97  
1/8 x 1/2 3.26   5/16 x2 7.05 22.43 1/2 x 3 1/2 32.21 40.69 7/8 x 1 1/2 68.51   1/2 x 3 1/2 32.241  
5/32 x 1/4 3.32   5/16 x 2 1/4 7.97 23.52 1/2 x 3 1/4   38.78 7/8 x 1 3/4     1/2 x 4 36.67  
5/32 x 3/8 3.09   5/16 x 2 1/2 8.61 23.59 1/2 x 3 3/4   88.85 7/8 x 2 79.61   1/2 x 4 1/2 40.82  
5/32 x 1/2 3.18   5/16 x 2 3/4 9.51 24.26 1/2 x 4 36.68   7/8 x 2 1/4 85.10   1/2 x 5 86.03  
5/32 x 5/8 3.28   5/16 x 3 10.15 25.00 1/2 x 4 1/2 40.83   7/8 x 2 1/2 90.58   1/2 x 5 1/2 89.94  
5/32 x 3/4 3.51   5/16 3 1/4 24.22   1/2 x 5 77.04   7/8 x 2 3/4 96.13   1/2 x 6 93.61  
5/32 x 7/8 3.73   5/16 x 3 1/2 11.77   1/2 x 5 1/2 89.54   7/8 x 3 101.68   1/2 x 6/12 169.85  
5/32 x 1 4.05   5/16 x 4 13.34   1/2 x 6 93.87   7/8 x 3 1/2 110.57   1/2 x 7 172.46  
5/32 x 1 1/4 5.39   5/16 x 4 1/2 31.06   1/2 x 8 176.87