ASME B16.5 blind flanges, Class 2500
Every size in the table, in mm, with a 3D model drawn from the same figures. See blind flanges for materials, standards and the marking.
3D model
6" Class 2500 blind
Key dimensions in mm, ASME B16.5
- O
- Flange diameter
- 485
- Tf
- Flange thickness
- 108
- R
- Raised face diameter
- 215.9
- Tr
- Raised face height
- 7
- W
- Bolt circle (PCD)
- 368.3
- d
- Bolt hole diameter
- 54
- n
- Number of holes
- 8
Dimensions
Units
Swipe the table sideways for every column. Choose a size to show it in the viewer.
| NPSSize | DNNominal size | OFlange diameter | TfFlange thickness | RRaised face diameter | TrRaised face height | WBolt circle (PCD) | dBolt hole diameter | nNumber of holes | Enquiry list |
|---|---|---|---|---|---|---|---|---|---|
| 15 | 135 | 30.2 | 34.9 | 7 | 88.9 | 22.2 | 4 | ||
| 20 | 140 | 31.8 | 42.9 | 7 | 95.2 | 22.2 | 4 | ||
| 25 | 160 | 35 | 50.8 | 7 | 108 | 25.4 | 4 | ||
| 32 | 185 | 38.1 | 63.5 | 7 | 130.2 | 28.6 | 4 | ||
| 40 | 205 | 44.5 | 73 | 7 | 146 | 31.7 | 4 | ||
| 50 | 235 | 50.9 | 92.1 | 7 | 171.4 | 28.6 | 8 | ||
| 65 | 265 | 57.2 | 104.8 | 7 | 196.8 | 31.7 | 8 | ||
| 80 | 305 | 66.7 | 127 | 7 | 228.6 | 34.9 | 8 | ||
| 100 | 355 | 76.2 | 157.2 | 7 | 273 | 41.3 | 8 | ||
| 125 | 420 | 92.1 | 185.7 | 7 | 323.8 | 47.6 | 8 | ||
| 150 | 485 | 108 | 215.9 | 7 | 368.3 | 54 | 8 | In the viewer | |
| 200 | 550 | 127 | 269.9 | 7 | 438.2 | 54 | 12 | ||
| 250 | 675 | 165.1 | 323.8 | 7 | 539.8 | 66.7 | 12 | ||
| 300 | 760 | 184.2 | 381 | 7 | 619.1 | 73 | 12 |
Dimensions in mm, for reference. Tolerances and full requirements as per the applicable standard. Confirm against your specification before ordering.
Source: Shiv Shakti Machine Tools Flange Catalogue, edition 2026 (draft), page 11. “–” means the catalogue lists no value.
[CONFIRM: table checked and signed off by the owners (unverified)][CONFIRM: whether the flange thickness includes the raised face]