Aircraft / Avionics Orders: 800.447.3408 Radio Control Orders: 877.219.4489
NPT - National Pipe Thread Taper
Note! Pipe thread sizes do not refer to any physical dimensions. The outside diameter of a pipe or fitting must be measured and referenced to a table for size identification.
Note! Inserting a NPT tapered fitting into a port tapped for a straight thread fitting and tightening it can break or severely damage the item the fitting is being installed in.
Pipe Size (inch) | Thread Pitch TPI | Fitting O.D. (inch) | NPT Specifications |
1/16" | 27 | 0.313" |
|
1/8" | 27 | 0.405" | |
1/4" | 18 | 0.540" | |
3/8" | 18 | 0.675" | |
1/2" | 14 | 0.840" |