Pipe Thread Sizes
| Nominal pipe size (in) | Pipe outer diameter | Threads per inch | Thread pitch |
|---|---|---|---|
| 1⁄16 | 0.3125 in (7.94 mm) | 27 | 0.03704 in (0.94082 mm) |
| 1⁄8 | 0.405 in (10.29 mm) | 27 | 0.03704 in (0.94082 mm) |
| 1⁄4 | 0.540 in (13.72 mm) | 18 | 0.05556 in (1.41122 mm) |
| 3⁄8 | 0.675 in (17.15 mm) | 18 | 0.05556 in (1.41122 mm) |
| 1⁄2 | 0.840 in (21.34 mm) | 14 | 0.07143 in (1.81432 mm) |
| 3⁄4 | 1.050 in (26.67 mm) | 14 | 0.07143 in (1.81432 mm) |
| 1 | 1.315 in (33.40 mm) | 11 1⁄2 | 0.08696 in (2.20878 mm) |
| 1 1⁄4 | 1.660 in (42.16 mm) | 11 1⁄2 | 0.08696 in (2.20878 mm) |
| 1 1⁄2 | 1.900 in (48.26 mm) | 11 1⁄2 | 0.08696 in (2.20878 mm) |
| 2 | 2.375 in (60.33 mm) | 11 1⁄2 | 0.08696 in (2.20878 mm) |
| 2 1⁄2 | 2.875 in (73.03 mm) | 8 | 0.12500 in (3.175 mm) |
| 3 | 3.500 in (88.90 mm) | 8 | 0.12500 in (3.175 mm) |
| 4 | 4.500 in (114.30 mm) | 8 | 0.12500 in (3.175 mm) |
| 5 | 5.563 in (141.30 mm) | 8 | 0.12500 in (3.175 mm) |
| 6 | 6.625 in (168.28 mm) | 8 | 0.12500 in (3.175 mm) |
| 10 | 10.750 in (273.05 mm) | 8 | 0.12500 in (3.175 mm) |
| 12 | 12.750 in (323.85 mm) | 8 | 0.12500 in (3.175 mm) |
| 14 | 14 in (355.60 mm) | 8 | 0.12500 in (3.175 mm) |
| 16 | 16 in (406.40 mm) | 8 | 0.12500 in (3.175 mm) |
| 18 | 18 in (457.20 mm) | 8 | 0.12500 in (3.175 mm) |
| 20 | 20 in (508.00 mm) | 8 | 0.12500 in (3.175 mm) |
| 24 | 24 in (609.60 mm) | 8 | 0.12500 in (3.175 mm) |
Read more about this topic: National Pipe Thread
Famous quotes containing the words pipe and/or thread:
“When you can pipe that merry old strain,
Robert of Lincoln, come back again.”
—William Cullen Bryant (1794–1878)
“One sought not absolute truth. One sought only a spool on which to wind the thread of history without breaking it.”
—Henry Brooks Adams (1838–1918)
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