As lightweight construction using aluminum and magnesium alloys grows in automotive and aerospace, the remains highly relevant. However, note that DIN standards are gradually being replaced by ISO or EN ISO standards. Currently, ISO 7085 covers similar ground, but many legacy designs and German machine tool specifications still cite DIN 7505 explicitly.
The European standard specifying the requirements and test methods for materials, geometry, and corrosion resistance of fasteners used in load-bearing timber structures. din 7505 standard pdf