|
 |
| STRAIGHT PIPE PITCH DIAMETER CHART |
| NOMINAL SIZE |
NPSM |
NPSC |
NPSL |
| INT.-2B |
EXT.-2A |
INTERNAL |
INTERNAL |
EXTERNAL |
| GO |
NO GO |
GO |
NO GO |
GO |
NO GO |
GO |
NO GO |
GO |
NO GO |
| 1/8 - 27 |
0.3736 |
0.3783 |
0.3725 |
0.3689 |
0.3701 |
0.3771 |
0.3863 |
0.3898 |
0.3840 |
0.3805 |
| 1/4 - 18 |
0.4916 |
0.4974 |
0.4903 |
0.4859 |
0.4864 |
0.4968 |
0.5073 |
0.5125 |
0.5038 |
0.4986 |
| 3/8 - 18 |
0.6270 |
0.6329 |
0.6256 |
0.6211 |
0.6218 |
0.6322 |
0.6444 |
0.6496 |
0.6409 |
0.6357 |
| 1/2 - 14 |
0.7784 |
0.7851 |
0.7769 |
0.7718 |
0.7717 |
0.7851 |
0.8008 |
0.8075 |
0.7963 |
0.7896 |
| 3/4 - 14 |
0.9889 |
0.9958 |
0.9873 |
0.9820 |
0.9822 |
0.9956 |
1.0112 |
1.0179 |
1.0067 |
1.0000 |
| 1 - 11 1/2 |
1.2386 |
1.2462 |
1.2369 |
1.2311 |
1.2305 |
1.2468 |
1.2658 |
1.2739 |
1.2604 |
1.2523 |
| 1 1/4 - 11 1/2 |
1.5834 |
1.5912 |
1.5816 |
1.5756 |
1.5752 |
1.5915 |
1.6106 |
1.6187 |
1.6051 |
1.5970 |
| 1 1/2 - 11 1/2 |
1.8223 |
1.8302 |
1.8205 |
1.8144 |
1.8142 |
1.8305 |
1.8495 |
1.8576 |
1.8441 |
1.8360 |
| 2 - 11 1/2 |
2.2963 |
2.3044 |
2.2944 |
2.2882 |
2.2881 |
2.3044 |
2.3234 |
2.3315 |
2.3180 |
2.3099 |
| 2 1/2 - 8 |
2.7622 |
2.7720 |
2.7600 |
2.7526 |
2.7504 |
2.7739 |
2.8012 |
2.8129 |
2.7934 |
2.7817 |
| 3 - 8 |
3.3885 |
3.3984 |
3.3862 |
3.3786 |
3.3768 |
3.4002 |
3.4276 |
3.4393 |
3.4198 |
3.4081 |
|
|
