1/4
20
0.1
0.35
0.4
0.25
0.241
5/16
18
0.111
0.44
0.498
0.3125
0.303
3/8
16
0.125
0.532
0.594
0.375
0.364
7/16
14
0.143
0.62
0.692
0.4375
0.426
1/2
13
0.154
0.708
0.792
0.5
0.488
9/16
12
0.167
0.802
0.896
0.5625
0.55
5/8
11
0.182
0.892
0.983
0.625
0.611
3/4
10
0.2
1.075
1.175
0.75
0.735
7/8
9
0.222
1.258
1.368
0.875
0.859
1
8
0.25
1.438
1.562
1
0.983
1-1/8
7|8
0.286
1.625
1.75
1.125
1.106
1-1/4
7|8
0.286
1.813
1.938
1.25
1.231
1-3/8
6
0.333
2
2.125
1.375
1.354
1-1/2
6
0.333
2.188
2.313
1.5
1.479
1-3/4
5
0.4
2.563
2.688
1.75
1.727
2
4.5
0.444
2.925
3.075
2
1.975
2-1/4
4.5
0.444
3.3
3.45
2.25
2.225
2-1/2
4
0.5
3.675
3.825
2.5
2.473
2-3/4
4
0.5
4.05
4.2
2.75
2.723
3
4
0.5
4.425
4.575
3
2.973
3-1/4
4
0.5
4.775
4.975
3.25
3.223
3-1/2
4
0.5
5.15
5.35
3.5
3.473
3-3/4
4
0.5
5.525
5.725
3.75
3.723
4
4
0.5
5.9
6.1
4
3.973