A practical introduction to separating dimensions, mechanical properties, materials, coatings and inspection requirements before searching for a manufacturer.
A designation such as DIN or ISO may define geometry, but mechanical properties, material, finish, testing, packaging and traceability can be governed by separate documents. Record the exact edition and every referenced standard.
Avoid relying on a product nickname. Build a specification line that a factory, laboratory and inspector can interpret in the same way.
These links are starting points, not proof that a particular product or supplier complies.
ISO standards catalogue↗DIN standards portal↗