DIN 6325 / ISO 8734 hardened dowel pin: dimensions and lengths
Hardened cylindrical dowel pin in tolerance m6, from 1 to 20 mm diameter, in the stock lengths of each diameter. Pick the diameter and the length to download its CAD files.
ISO 8734 / DIN 6325 dowel pin dimensions
| d | capprox, mm | lfrom, mm | lto, mm |
|---|---|---|---|
| 1 | 0.2 | 3 | 10 |
| 1.5 | 0.3 | 4 | 16 |
| 2 | 0.35 | 5 | 20 |
| 2.5 | 0.4 | 6 | 24 |
| 3 | 0.5 | 8 | 30 |
| 4 | 0.63 | 10 | 40 |
| 5 | 0.8 | 12 | 50 |
| 6 | 1.2 | 14 | 60 |
| 8 | 1.6 | 18 | 80 |
| 10 | 2 | 22 | 100 |
| 12 | 2.5 | 26 | 100 |
| 16 | 3 | 40 | 100 |
| 20 | 3.5 | 50 | 100 |
Dimensions in millimetres unless stated. Select a row to load its CAD files above.
ISO 8734 and DIN 6325
DIN 6325 was replaced by ISO 8734, and both names are still used for the same hardened pin. The DIN version describes one rounded end and one chamfered end in more detail. The files show both ends chamfered by c, as ISO 8734 type A.
ISO 8734 dowel pin: when to use a hardened pin
A hardened dowel pin keeps its size where a soft pin would wear or deform: in fixtures, tools and moulds that are taken apart and put back together, and between hardened parts. It is made in m6, so it is pressed into a reamed hole in one part and can slide in the other with a looser hole when the parts have to come apart. The unhardened ISO 2338 pin is the cheaper choice where none of that applies.
DIN 6325 dowel pins: common questions
- What lengths does a 6 mm DIN 6325 pin come in?
- The files here cover 14 to 60 mm for the 6 mm pin, in the stock steps of 2 mm up to 32 mm and then 35, 40, 45, 50, 55 and 60 mm.
- Are ISO 8734 and DIN 6325 interchangeable?
- Yes for diameter, tolerance and length. Check the end shape if it matters: the files follow ISO 8734 type A with both ends chamfered.