Thread Profile Dimensions
| Property | mm | Inch |
|---|---|---|
| Nominal Pipe Size (Ø) | 3/8" | ... |
| Pitch (TPI) (P) | 19 | ... |
| Pitch (Distance) (P) | 1.337 | 0.0526 |
| Thread V half Angle (α) | 27.5° | 27.5° |
| Height of sharp V (H) | 1.284 | 0.0506 |
| Thread height (h) | 0.856 | 0.0337 |
| Root/Crest Radius (r) | 0.184 | 0.0072 |
| Major Diameter (D) | 16.662 | 0.656 |
| Pitch Diameter (D2) | 15.806 | 0.6223 |
| Minor Diameter (D1) | 14.95 | 0.5886 |
| Tap Drill Size (Td) | 15.0 | 0.5906 |
| Tolerance onD1, D2 & D3 | ±0.104 | ±0.0041 |
| BSPT Series | Internal Parallel (Rp) |
| Matching external Thread | BSPT R 3/8 |
| Relevant Standards | ISO 7-1, ISO 7-2 |
