BSP
Nominal Size [Inch] |
D1 mm (") |
D2 mm (") |
P mm (") |
1/2 |
20.96 (0.83) |
18.63 (0.73) |
1.81 (0.07) |
3/4 |
26.41 (1.04) |
24.12 (0.95) |
1.81 (0.07) |
1 |
33.25 (1.31) |
30.29 (1.19) |
2.31 (0.09) |
1 1/4 |
41.6 (1.64) |
39.3 (1.55) |
2.31 (0.09) |
1 1/2 |
47.80 (1.88) |
44.85 (1.77) |
2.31 (0.09) |
2 |
59.61 (2.35) |
56.66 (2.23) |
2.31 (0.09) |
3 |
87.88 (3.46) |
84.93 (3.34) |
2.31 (0.09) |
4 |
113.03 (4.45) |
110.07 (4.33) |
2.31 (0.09) |
NPT
Nominal Size [Inch] |
D1 mm (") |
D2 mm (") |
P mm (") |
1/2 |
21.22 (0.84) |
18.32 (0.72) |
1.81 (0.07) |
3/4 |
26.57 (1.05) |
23.77 (0.93) |
1.81 (0.07) |
1 |
33.23 (1.31) |
29.69 (1.17) |
2.21 (0.09) |
1 1/2 |
48.05 (1.89) |
44.52 (1.75) |
2.21 (0.09) |
2 |
60.09 (2.37) |
56.56 (2.23) |
2.21 (0.09) |
3 |
88.61 (3.49) |
83.53 (3.29) |
3.18 (0.13) |
4 |
113.97 (4.49) |
108.89 (4.29) |
3.18 (0.13) |
[Parallel threads can be measured at any length, tapered threads must be measured at the gauge length.]