1/4
20
0.25
0.2452
0.375
0.1250
5/16
18
0.3125
0.3073
0.46875
0.1563
3/8
16
0.375
0.3695
0.5625
0.1875
7/16
14
0.4375
0.4316
0.65625
0.2188
1/2
12
0.5
0.4937
0.75
0.2500
9/16
12
0.5625
0.556
0.84375
0.2813
5/8
11
0.625
0.6183
0.9375
0.3125
3/4
10
0.75
0.7428
1.125
0.3750
7/8
9
0.875
0.8674
1.3125
0.4375
1
8
1
0.992
1.5
0.5000
1-1/8
7
1.125
1.1164
1.6875
0.5625
1-1/4
7
1.25
1.2413
1.875
0.6250
1-1/2
6
1.5
1.4906
2.25
0.7500