ASME B16.5 blind flanges, Class 900
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 900 blind
Key dimensions in mm, ASME B16.5
- O
- Flange diameter
- 380
- Tf
- Flange thickness
- 55.6
- R
- Raised face diameter
- 215.9
- Tr
- Raised face height
- 7
- W
- Bolt circle (PCD)
- 317.5
- d
- Bolt hole diameter
- 31.7
- n
- Number of holes
- 12
- kg
- Weight, approx.
- 47.4
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 | kgWeight, approx. | Enquiry list |
|---|---|---|---|---|---|---|---|---|---|---|
| 15 | 120 | 22.3 | 34.9 | 7 | 82.6 | 22.2 | 4 | 1.8 | ||
| 20 | 130 | 25.4 | 42.9 | 7 | 88.9 | 22.2 | 4 | 2.4 | ||
| 25 | 150 | 28.6 | 50.8 | 7 | 101.6 | 25.4 | 4 | 3.6 | ||
| 32 | 160 | 28.6 | 63.5 | 7 | 111.1 | 25.4 | 4 | 4.1 | ||
| 40 | 180 | 31.8 | 73 | 7 | 123.8 | 28.6 | 4 | 5.8 | ||
| 50 | 215 | 38.1 | 92.1 | 7 | 165.1 | 25.4 | 8 | 10.1 | ||
| 65 | 245 | 41.3 | 104.8 | 7 | 190.5 | 28.6 | 8 | 14 | ||
| 80 | 240 | 38.1 | 127 | 7 | 190.5 | 25.4 | 8 | 13.1 | ||
| 100 | 290 | 44.5 | 157.2 | 7 | 235 | 31.7 | 8 | 22.1 | ||
| 125 | 350 | 50.8 | 185.7 | 7 | 279.4 | 34.9 | 8 | 36.5 | ||
| 150 | 380 | 55.6 | 215.9 | 7 | 317.5 | 31.7 | 12 | 47.4 | In the viewer | |
| 200 | 470 | 63.5 | 269.9 | 7 | 393.7 | 38.1 | 12 | 82.5 | ||
| 250 | 545 | 69.9 | 323.8 | 7 | 469.9 | 38.1 | 16 | 123 | ||
| 300 | 610 | 79.4 | 381 | 7 | 533.4 | 38.1 | 20 | 174 | ||
| 350 | 640 | 85.8 | 412.8 | 7 | 558.8 | 41.3 | 20 | 206 | ||
| 400 | 705 | 88.9 | 469.9 | 7 | 616 | 44.4 | 20 | 259 | ||
| 450 | 785 | 101.6 | 533.4 | 7 | 685.8 | 50.8 | 20 | 367 | ||
| 500 | 855 | 108 | 584.2 | 7 | 749.3 | 54 | 20 | 463 | ||
| 600 | 1040 | 139.7 | 692.2 | 7 | 901.7 | 66.7 | 20 | 875 |
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 10, weights page 15. “–” 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]