ASME B16.11 — Threaded (NPT) fittings — Class 3000 & 6000
ASME B16.11 Threaded (NPT) fittings — Class 3000 & 6000 — 11 sizes.
| NPS | 90°/Tee A — 3000 (mm) | 90°/Tee A — 6000 (mm) | Threads / inch |
|---|---|---|---|
| 1/4 | 21 | 25 | 18 |
| 3/8 | 25 | 28 | 18 |
| 1/2 | 28 | 33 | 14 |
| 3/4 | 33 | 38 | 14 |
| 1 | 38 | 43 | 11.5 |
| 1-1/4 | 44 | 52 | 11.5 |
| 1-1/2 | 51 | 54 | 11.5 |
| 2 | 60 | 64 | 11.5 |
| 2-1/2 | 64 | 79 | 8 |
| 3 | 83 | 86 | 8 |
| 4 | 95 | 106 | 8 |
- Threaded Class 2000 ↔ Sch 80, 3000 ↔ Sch 160, 6000 ↔ XXS for pressure rating.
- Threads per ASME B1.20.1 (NPT).