: Internal centering (centering on the minor diameter).
| Edition | Status | Significant Changes | | :------ | :----- | :------------------ | | | Historic (withdrawn) | Original edition covering straight‑sided splines, heavy series. | | DIN 5464:2006-02 | Historic (draft) | Interim draft that did not become a final edition. | | DIN 5464:2010-03 | Current | The latest, up‑to‑date edition. | din 5464 standard pdf
Understanding the DIN 5464 Standard: Straight-Sided Splines - Heavy Series (PDF) : Internal centering (centering on the minor diameter)