NNI Fire Hose/Hydrant Adapter
Female NPSH x Male NST (NH)
Size: 1-1/2" Female NPSH X 1-1/2" Male NST (NH)
Finish: Cast Brass
Female NPSH x Male NST (NH)
Size: 1-1/2" Female NPSH X 1-1/2" Male NST (NH)
Finish: Cast Brass
| National Standard Thread NH/NST |
Straight Iron Pipe NPSH/IPT |
Standard Pipe Thread NPT/TIPT |
British Standard Pipe Thread BSP |
|||||
|---|---|---|---|---|---|---|---|---|
| Size | ODM | TPI | ODM | TPI | ODM | TPI | ODM | TPI |
| ¾" | 1.375 | 8 | 1.035 | 14 | 1.050 | 14 | ||
| 1" | 1.375 | 8 | 1.295 | 11.5 | 1.315 | 11.5 | 1.309 | 11 |
| 1½" | 1.990 | 9 | 1.878 | 11.5 | 1.900 | 11.5 | ||
| 2" | 2.515 | 8 | 2.352 | 11.5 | 2.375 | 11.5 | 1.882 | 11 |
| 2½" | 3.068 | 7.5 | 2.841 | 8 | 2.875 | 8 | ||
| 3" | 3.623 | 6 | 3.470 | 8 | 3.500 | 8 | 2.960 | 11 |
| 3½" | 4.243 | 6 | 3.970 | 8 | 4.000 | 8 | 4.125 | 3 |
| 4" | 5.010 | 4 | 4.470 | 8 | 4.500 | 8 | 4.625 | 3 |
| 4½" | 5.760 | 4 | 4.970 | 8 | 5.000 | 8 | 5.125 | 3 |
| 5" | 6.260 | 4 | 5.563 | 8 | 5.625 | 3 | ||
| 6" | 7.025 | 4 | 6.625 | 8 | 6.625 | 3 | ||