ASME B16.5 lap joint flanges, Class 150
Every size in the table, in mm, with a 3D model drawn from the same figures. See lap joint flanges for materials, standards and the marking.
3D model
6" Class 150 lap joint
Key dimensions in mm, ASME B16.5
- O
- Flange diameter
- 280
- Tf
- Flange thickness
- 25.4
- X
- Hub diameter
- 192
- B
- Bore
- 171.4
- B1
- Bore
- 154.1
- Y
- Length through hub
- 40
- r
- Radius
- 13
- W
- Bolt circle (PCD)
- 241.3
- d
- Bolt hole diameter
- 22.2
- n
- Number of holes
- 8
- kg
- Weight, approx.
- 7.5
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 | XHub diameter | BBore | B1Bore | YLength through hub | rRadius | WBolt circle (PCD) | dBolt hole diameter | nNumber of holes | kgWeight, approx. | Enquiry list |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 15 | 90 | 11.2 | 30 | 22.9 | 15.8 | 16 | 3 | 60.3 | 15.9 | 4 | 0.4 | ||
| 20 | 100 | 12.7 | 38 | 28.2 | 20.9 | 16 | 3 | 69.9 | 15.9 | 4 | 0.7 | ||
| 25 | 110 | 14.3 | 49 | 34.9 | 26.6 | 17 | 3 | 79.4 | 15.9 | 4 | 0.8 | ||
| 32 | 115 | 15.9 | 59 | 43.7 | 35.1 | 21 | 5 | 88.9 | 15.9 | 4 | 1.1 | ||
| 40 | 125 | 17.5 | 65 | 50 | 40.9 | 22 | 6 | 98.4 | 15.9 | 4 | 1.4 | ||
| 50 | 150 | 19.1 | 78 | 62.5 | 52.5 | 25 | 8 | 120.7 | 19 | 4 | 2.2 | ||
| 65 | 180 | 22.3 | 90 | 75.4 | 62.7 | 29 | 8 | 139.7 | 19 | 4 | 3.6 | ||
| 80 | 190 | 23.9 | 108 | 91.4 | 77.9 | 30 | 10 | 152.4 | 19 | 4 | 4.1 | ||
| 90 | 215 | 23.9 | 122 | 104.1 | 90.1 | 32 | 10 | 177.8 | 19 | 8 | 5.2 | ||
| 100 | 230 | 23.9 | 135 | 116.8 | 102.3 | 33 | 11 | 190.5 | 19 | 8 | 5.6 | ||
| 125 | 255 | 23.9 | 164 | 144.4 | 128.2 | 36 | 11 | 215.9 | 22.2 | 8 | 6.3 | ||
| 150 | 280 | 25.4 | 192 | 171.4 | 154.1 | 40 | 13 | 241.3 | 22.2 | 8 | 7.5 | In the viewer | |
| 200 | 345 | 28.6 | 246 | 222.2 | 202.7 | 44 | 13 | 298.5 | 22.2 | 8 | 12.6 | ||
| 250 | 405 | 30.2 | 305 | 277.4 | 254.6 | 49 | 13 | 362 | 25.4 | 12 | 18.5 | ||
| 300 | 485 | 31.8 | 365 | 328.2 | 304.8 | 56 | 13 | 431.8 | 25.4 | 12 | 28 | ||
| 350 | 535 | 35 | 400 | 360.2 | 336.5 | 79 | 13 | 476.3 | 28.6 | 12 | 35 | ||
| 400 | 595 | 36.6 | 457 | 411.2 | 387.3 | 87 | 13 | 539.8 | 28.6 | 16 | 45 | ||
| 450 | 635 | 39.7 | 505 | 462.3 | 438.1 | 97 | 13 | 577.9 | 31.7 | 16 | 50 | ||
| 500 | 700 | 42.9 | 559 | 514.4 | 488.9 | 103 | 13 | 635 | 31.7 | 20 | 64 | ||
| 600 | 815 | 47.7 | 663 | 616 | 590.5 | 111 | 13 | 749.3 | 34.9 | 20 | 89 |
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 9, weights page 15. “–” means the catalogue lists no value.
[CONFIRM: table checked and signed off by the owners (unverified)]