Stock Photo (May Not Be Of Actual Fitting Size)
An Size Chart
| AN Size | Hose Size | Thread Size |
|---|---|---|
| -3 | 3/16 | 3/8-24 |
| -4 | 1/4 | 7/16-20 |
| -6 | 3/8 | 9/16-18 |
| -8 | 1/2 | 3/4-16 |
| -10 | 5/8 | 7/8-14 |
| -12 | 3/4 | 1-1/16 |
| -16 | 1 | 1-5/16 |
Npt Size Chart
| OD Fraction Inch (quick reference only) | OD Actual (inches) | Pipe Thread Size | Normal engagement for tight joint | Threads per Inch | Circumference (inches) |
| 5/16 | 0.3125 | 1/16 | 0.2611 | 27 | 0.9817 |
| 13/32 | 0.405 | 1/8 | 0.2639 | 27 | 1.272 |
| 35/64 | 0.540 | 1/4 | 0.4018 | 18 | 1.696 |
| 43/64 | 0.675 | 3/8 | 0.4078 | 18 | 2.121 |
| 27/32 | 0.840 | 1/2 | 0.5337 | 14 | 2.639 |
| 1-3/64 | 1.050 | 3/4 | 0.5457 | 14 | 3.299 |
| 1-5/16 | 1.315 | 1 | 0.6828 | 11-1/2 | 4.131 |
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