| Thread size |
Thread per inch |
F |
G |
H |
| 1 |
8 |
38.00 |
42.10 |
22.43 |
| 1-1/8 |
7 |
42.77 |
47.34 |
25.31 |
| 1/1/4 |
7 |
47.52 |
52.57 |
27.69 |
| 1-3/8 |
6 |
52.27 |
57.85 |
30.53 |
| 1-1/2 |
6 |
57.05 |
63.09 |
33.35 |
| 1-5/8 |
5.5 |
61.81 |
68.35 |
36.10 |
| 1-3/4 |
5 |
66.51 |
73.61 |
39.01 |
| 1-7/8 |
5 |
69.75 |
78.85 |
41.20 |
| 2 |
4.5 |
76.10 |
84.08 |
44.66 |
| 2-1/4 |
4.5 |
85.62 |
94.56 |
49.93 |
| 2-1/2 |
4 |
95.15 |
105.08 |
55.58 |
| 2-3/4 |
4 |
104.61 |
115.59 |
61.24 |
| 3 |
4 |
114.21 |
126.07 |
66.90 |
|
