ASME B16.5 — Stud bolts RF / RTJ — Class 300
ASME B16.5 Stud bolts RF / RTJ — Class 300 — 16 sizes. Single-source reference — verify before use.
| NPS | No. of studs | Stud dia. (in) | Stud length RF (mm) | Stud length RTJ (mm) |
|---|---|---|---|---|
| 1/2 | 4 | 1/2 | 63.5 | 76.2 |
| 3/4 | 4 | 5/8 | 76.2 | 88.9 |
| 1 | 4 | 5/8 | 76.2 | 88.9 |
| 1-1/2 | 4 | 3/4 | 88.9 | 101.6 |
| 2 | 8 | 5/8 | 88.9 | 101.6 |
| 3 | 8 | 3/4 | 107.9 | 120.6 |
| 4 | 8 | 3/4 | 114.3 | 127 |
| 6 | 12 | 3/4 | 120.6 | 139.7 |
| 8 | 12 | 7/8 | 139.7 | 152.4 |
| 10 | 16 | 1 | 158.8 | 171.4 |
| 12 | 16 | 1-1/8 | 171.4 | 184.1 |
| 14 | 20 | 1-1/8 | 177.8 | 190.5 |
| 16 | 20 | 1-1/4 | 190.5 | 203.2 |
| 18 | 24 | 1-1/4 | 196.8 | 209.5 |
| 20 | 24 | 1-1/4 | 203.2 | 222.2 |
| 24 | 24 | 1-1/2 | 228.6 | 254 |
- Lengths from concretecalculate.com inch chart, converted to mm at 25.4 (inch-convention lengths, NOT Wermac metric lengths).
- NPS 1/2 and 24 inch values also given by Project Materials (2-1/2/3 in; 9/10 in). Other rows single-source.
- Wermac metric equivalents seen: NPS 1/2 65/75 mm (4 x 1/2), NPS 16 190/205 mm, NPS 20 205/220 mm (24 x 1-1/4), NPS 24 230/255 mm (24 x 1-1/2); Boltport agrees with Wermac at 1/2 and 24.
- NPS 1-1/4, 2-1/2, 3-1/2, 5 rows not recovered.
Sources: concretecalculate.com/flange-bolt-size-chart/ · blog.projectmaterials.com/quick-answers/flanges/stud-bolt-le · wermac.org/bolts/dimensions_stud-bolts_class-300_rf-rtj-flan · a193gradeb16.com/stud-bolts-size-chart-for-b16.5-class-300-f