Xem Studiomeasured geometryLibrary › Hardware › NPT male thread envelopes 1/8 to 1 in
npt-1-4-male
1/4 NPT male, major OD 13.72 mm, 18 TPI, 10.2 mm effective thread length (L2); plain cylinder at OD (taper not modeled)
Exact dimensions. True size, no printing tolerance added. Threads are plain cylinders at the major diameter.
STEP STL free, CC BY 4.0 (credit "Xem Studio")
Dimensions
| size | 1/4 |
|---|---|
| od_mm | 13.72 |
| tpi | 18 |
| tap_drill_mm | 11.1 |
| l2_mm | 10.2 |
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NPT male thread envelopes 1/8 to 1 in (ASME B1.20.1): every size, notes, mating features and sources. What is the outside diameter of a 1/4 NPT thread and the drill size for it?