ASME B16.5 lap joint flanges, Class 600
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 600 lap joint
Key dimensions in mm, ASME B16.5
- O
- Flange diameter
- 355
- Tf
- Flange thickness
- 47.7
- X
- Hub diameter
- 222
- B
- Bore
- 171.4
- B1
- Bore
- 154.1
- Y
- Length through hub
- 67
- r
- Radius
- 13
- W
- Bolt circle (PCD)
- 292.1
- d
- Bolt hole diameter
- 28.6
- n
- Number of holes
- 12
- kg
- Weight, approx.
- 29.5
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 | 95 | 14.3 | 38 | 22.9 | 15.8 | 22 | 3 | 66.7 | 15.9 | 4 | 0.8 | ||
| 20 | 115 | 15.9 | 48 | 28.2 | 20.9 | 25 | 3 | 82.6 | 19 | 4 | 1.4 | ||
| 25 | 125 | 17.5 | 54 | 34.9 | 26.6 | 27 | 3 | 88.9 | 19 | 4 | 1.6 | ||
| 32 | 135 | 20.7 | 64 | 43.7 | 35.1 | 29 | 5 | 98.4 | 19 | 4 | 2.1 | ||
| 40 | 155 | 22.3 | 70 | 50 | 40.9 | 32 | 6 | 114.3 | 22.2 | 4 | 3.1 | ||
| 50 | 165 | 25.4 | 84 | 62.5 | 52.5 | 37 | 8 | 127 | 19 | 8 | 3.7 | ||
| 65 | 190 | 28.6 | 100 | 75.4 | 62.7 | 41 | 8 | 149.2 | 22.2 | 8 | 5.4 | ||
| 80 | 210 | 31.8 | 117 | 91.4 | 77.9 | 46 | 10 | 168.3 | 22.2 | 8 | 7.3 | ||
| 90 | 230 | 35 | 133 | 104.1 | 90.1 | 49 | 10 | 184.2 | 25.4 | 8 | not listed | ||
| 100 | 275 | 38.1 | 152 | 116.8 | 102.3 | 54 | 11 | 215.9 | 25.4 | 8 | 15.8 | ||
| 125 | 330 | 44.5 | 189 | 144.4 | 128.2 | 60 | 11 | 266.7 | 28.6 | 8 | 24.5 | ||
| 150 | 355 | 47.7 | 222 | 171.4 | 154.1 | 67 | 13 | 292.1 | 28.6 | 12 | 29.5 | In the viewer | |
| 200 | 420 | 55.6 | 273 | 222.2 | 202.7 | 76 | 13 | 349.2 | 31.7 | 12 | 43 | ||
| 250 | 510 | 63.5 | 343 | 277.4 | 254.6 | 111 | 13 | 431.8 | 34.9 | 16 | 70 | ||
| 300 | 560 | 66.7 | 400 | 328.2 | 304.8 | 117 | 13 | 489 | 34.9 | 20 | 86 | ||
| 350 | 605 | 69.9 | 432 | 360.2 | 336.5 | 127 | 13 | 527 | 38.1 | 20 | 100 | ||
| 400 | 685 | 76.2 | 495 | 411.2 | 387.3 | 140 | 13 | 603.2 | 41.3 | 20 | 142 | ||
| 450 | 745 | 82.6 | 546 | 462.3 | 438.1 | 152 | 13 | 654 | 44.4 | 20 | 175 | ||
| 500 | 815 | 88.9 | 610 | 514.4 | 488.9 | 165 | 13 | 723.9 | 44.4 | 24 | 221 | ||
| 600 | 940 | 101.6 | 718 | 616 | 590.5 | 184 | 13 | 838.2 | 50.8 | 24 | 315 |
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)]