Общий каталог Yamawa 2021 - страница 696
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Classification of American pipe thread taps
SP
| Standard | Symbol | Class | Material | Threads to be cut | Range |
| Straight Pipe Thread Tap | NPS | Ground Thread | HSS | NPSC, NPSM | -1 |
| Dryseal Straight Pipe Thread Tap | NPSF | Ground Thread | HSS | NPSF | -¾ |
| Taper Pipe Thread Tap | NPT | Ground Thread | HSS | NPT | -2 |
| Dryseal Taper Pipe Thread Tap | NPTF | Ground Thread | HSS | NPTF | -2 |
SL
Thread limit of American Pipe Thread Taps
Straight pipe thread taps for (NPS) G Class
PO
ST
ROLL
CARBIDE
LONG
| Major diameter | Pitch diameter | Minor diameter | ||||||
| Size | Max. | Min. | Tolerance | Max. | Min. | Tolerance | Max. | HAND |
| NPSe- 27 | 10.241 | 10.216 | 0.025 | 9.527 | 9.515 | 0.012 | M - 0.053 | TAPS |
| NPSw- 18 | 13.606 | 13.582 | 0.024 | 12.542 | 12.530 | 0.012 | M - 1.019 | |
| NPSy- 18 | 17.045 | 17.021 | 0.024 | 15.981 | 15.969 | 0.012 | M - 1.019 | |
| NPSq- 14 | 21.226 | 21.202 | 0.024 | 19.840 | 19.828 | 0.012 | M - 1.334 | |
| NPSt- 14 | 26.560 | 26.536 | 0.024 | 25.186 | 25.162 | 0.024 | M - 1.334 | EG (STI) |
| NPS 1 - 11.5 | 33.215 | 33.176 | 0.037 | 31.526 | 31.502 | 0.024 | M - 1.644 |
*Above dimensions change depending on actually measured
SPECIAL
THREADS,