DIN weld neck flanges, PN 10
Every size in the table, in mm, with a 3D model drawn from the same figures. See weld neck flanges for materials, standards and the marking.
3D model

DN 350 PN 10 weld neck
Key dimensions in mm, DIN 2632
- D
- Flange diameter
- 505
- b1
- Flange thickness
- 26
- d1
- Weld end diameter, series 1
- 355.6
- d1
- Weld end diameter, series 2
- 368
- d3
- Hub diameter, series 1
- –
- d3
- Hub diameter, series 2
- 385
- s
- Wall thickness
- 7.1
- r1
- Radius
- 12
- h1
- Length through hub
- 68
- h3
- Length
- 16
- d4
- Raised face diameter
- 430
- f
- Raised face height
- 4
- k
- Bolt circle (PCD)
- 460
- d2
- Bolt hole diameter
- 22
- Thrd
- Bolt thread
- M 20
- n
- Number of holes
- 16
- kg
- Weight, approx.
- 23.6
Dimensions
Swipe the table sideways for every column. Choose a size to show it in the viewer.
| DNSize | DFlange diameter | b1Flange thickness | d1Weld end diameter (1) | d1Weld end diameter (2) | d3Hub diameter (1) | d3Hub diameter (2) | sWall thickness | r1Radius | h1Length through hub | h3Length | d4Raised face diameter | fRaised face height | kBolt circle (PCD) | d2Bolt hole diameter | ThrdBolt thread | nNumber of holes | kgWeight, approx. | Enquiry list |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 340 | 24 | 219.1 | not listed | not listed | 235 | 5.9 | 10 | 62 | 16 | 268 | 3 | 295 | 22 | M 20 | 8 | 11.3 | ||
| 395 | 26 | 273 | 267 | 292 | 285 | 6.3 | 12 | 68 | 16 | 320 | 3 | 350 | 22 | M 20 | 12 | 14.7 | ||
| 445 | 26 | 323.9 | not listed | not listed | 344 | 7.1 | 12 | 68 | 16 | 370 | 4 | 400 | 22 | M 20 | 12 | 17.4 | ||
| 505 | 26 | 355.6 | 368 | not listed | 385 | 7.1 | 12 | 68 | 16 | 430 | 4 | 460 | 22 | M 20 | 16 | 23.6 | In the viewer | |
| 565 | 26 | 406.4 | 419 | not listed | 440 | 7.1 | 12 | 72 | 16 | 482 | 4 | 515 | 26 | M 24 | 16 | 28.6 | ||
| 670 | 28 | 508 | not listed | not listed | 542 | 7.1 | 12 | 75 | 16 | 585 | 4 | 620 | 26 | M 24 | 20 | 38.1 |
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 14. “–” 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]