ASME B16.5 — Stud bolts RF / RTJ — Class 900
ASME B16.5 Stud bolts RF / RTJ — Class 900 — 19 sizes.
| NPS | No. of studs | Stud dia. (in) | Stud length RF (mm) | Stud length RTJ (mm) |
|---|---|---|---|---|
| 1/2 | 4 | 3/4 | 110 | 110 |
| 3/4 | 4 | 3/4 | 115 | 115 |
| 1 | 4 | 7/8 | 125 | 125 |
| 1-1/4 | 4 | 7/8 | 125 | 125 |
| 1-1/2 | 4 | 1 | 140 | 140 |
| 2 | 8 | 7/8 | 145 | 145 |
| 2-1/2 | 8 | 1 | 160 | 160 |
| 3 | 8 | 7/8 | 145 | 145 |
| 4 | 8 | 1-1/8 | 170 | 170 |
| 5 | 8 | 1-1/4 | 190 | 190 |
| 6 | 12 | 1-1/8 | 190 | 195 |
| 8 | 12 | 1-3/8 | 220 | 220 |
| 10 | 16 | 1-3/8 | 235 | 235 |
| 12 | 20 | 1-3/8 | 255 | 255 |
| 14 | 20 | 1-1/2 | 275 | 280 |
| 16 | 20 | 1-5/8 | 285 | 290 |
| 18 | 20 | 1-7/8 | 325 | 335 |
| 20 | 20 | 2 | 350 | 360 |
| 24 | 20 | 2-1/2 | 440 | 455 |
- NPS 1/2–2-1/2 rows correspond to Class 1500 flange dimensions (B16.5 Class 900 uses Class 1500 dimensions for these sizes).
- Inch lengths differ slightly (e.g. NPS 1: 5 in vs 125 mm).