ASME B16.5 lap joint flanges, Class 900
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 900 lap joint
Key dimensions in mm, ASME B16.5
- O
- Flange diameter
- 380
- Tf
- Flange thickness
- 55.6
- X
- Hub diameter
- 235
- B
- Bore
- 171.4
- B1
- Bore
- 154.1
- Y
- Length through hub
- 86
- r
- Radius
- 13
- W
- Bolt circle (PCD)
- 317.5
- d
- Bolt hole diameter
- 31.7
- n
- Number of holes
- 12
- kg
- Weight, approx.
- 41.2
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 | 120 | 22.3 | 38 | 22.9 | 15.8 | 32 | 3 | 82.6 | 22.2 | 4 | 1.7 | ||
| 20 | 130 | 25.4 | 44 | 28.2 | 20.9 | 35 | 3 | 88.9 | 22.2 | 4 | 2.3 | ||
| 25 | 150 | 28.6 | 52 | 34.9 | 26.6 | 41 | 3 | 101.6 | 25.4 | 4 | 3.4 | ||
| 32 | 160 | 28.6 | 64 | 43.7 | 35.1 | 41 | 5 | 111.1 | 25.4 | 4 | 3.9 | ||
| 40 | 180 | 31.8 | 70 | 50 | 40.9 | 44 | 6 | 123.8 | 28.6 | 4 | 5.4 | ||
| 50 | 215 | 38.1 | 105 | 62.5 | 52.5 | 57 | 8 | 165.1 | 25.4 | 8 | 9.8 | ||
| 65 | 245 | 41.3 | 124 | 75.4 | 62.7 | 64 | 8 | 190.5 | 28.6 | 8 | 13.7 | ||
| 80 | 240 | 38.1 | 127 | 91.4 | 77.9 | 54 | 10 | 190.5 | 25.4 | 8 | 11.6 | ||
| 100 | 290 | 44.5 | 159 | 116.8 | 102.3 | 70 | 11 | 235 | 31.7 | 8 | 19.8 | ||
| 125 | 350 | 50.8 | 190 | 144.4 | 128.2 | 79 | 11 | 279.4 | 34.9 | 8 | 32 | ||
| 150 | 380 | 55.6 | 235 | 171.4 | 154.1 | 86 | 13 | 317.5 | 31.7 | 12 | 41.2 | In the viewer | |
| 200 | 470 | 63.5 | 298 | 222.2 | 202.7 | 114 | 13 | 393.7 | 38.1 | 12 | 71 | ||
| 250 | 545 | 69.9 | 368 | 277.4 | 254.6 | 127 | 13 | 469.9 | 38.1 | 16 | 100 | ||
| 300 | 610 | 79.4 | 419 | 328.2 | 304.8 | 143 | 13 | 533.4 | 38.1 | 20 | 133 | ||
| 350 | 640 | 85.8 | 451 | 360.2 | 336.5 | 156 | 13 | 558.8 | 41.3 | 20 | 152 | ||
| 400 | 705 | 88.9 | 508 | 411.2 | 387.3 | 165 | 13 | 616 | 44.4 | 20 | 184 | ||
| 450 | 785 | 101.6 | 565 | 462.3 | 438.1 | 190 | 13 | 685.8 | 50.8 | 20 | 258 | ||
| 500 | 855 | 108 | 622 | 514.4 | 488.9 | 210 | 13 | 749.3 | 54 | 20 | 317 | ||
| 600 | 1040 | 139.7 | 749 | 616 | 590.5 | 267 | 13 | 901.7 | 66.7 | 20 | 608 |
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)]