Since measuring tooth thickness directly is difficult, DIN 5480 documents typically provide verification via:
Compare this to the older (often found in hydraulics).
When your manufacturing order or quality sign-off depends on it, do not trust a random PDF. Purchase the standard, use verified software, or obtain a screenshot from a licensed corporate database. A verified dimension saves a scrapped shafts – and your professional reputation.
Here is the reality check most online articles avoid: The 2006 version (DIN 5480-1, 5480-2, 5480-15) is copyrighted by DIN Deutsches Institut für Normung e.V. and distributed by Beuth Verlag.