Thread Profile Dimensions
Property | mm | Inch |
---|---|---|
Nominal Pipe Size (Ø) | 3" | ... |
Pitch (TPI) (P) | 11 | ... |
Pitch (Distance) (P) | 2.309 | 0.0909 |
Thread V half Angle (α) | 27.5° | 27.5° |
Height of sharp V (H) | 2.218 | 0.0873 |
Thread height (h) | 1.479 | 0.0582 |
Root/Crest Radius (r) | 0.317 | 0.0125 |
Major Diameter (D) | 87.884 | 3.46 |
Pitch Diameter (D2) | 86.405 | 3.4018 |
Minor Diameter (D1) | 84.927 | 3.3436 |
Tap Drill Size (Td) | -999 | -39.3307 |
Tolerance onD1, D2 & D3 | ±0.216 | ±0.0085 |
BSPT Series | Internal Parallel (Rp) |
Matching external Thread | BSPT R 3 |
Relevant Standards | ISO 7-1, ISO 7-2 |