The four classes are:
Covers nominal dimensions from 1 mm up to 500 mm . din 7161 pdf
You might wonder, "Why search for a DIN 7161 PDF when ISO 286-1 exists?" The answer lies in interoperability and historiography. The four classes are: Covers nominal dimensions from
Many German machine tools, automotive parts, and industrial components manufactured between the 1950s and 1990s were designed using the DIN 7160/7161 system. If you are repairing or reverse-engineering such a component, you need to understand the original nomenclature. For example, DIN 7161 defines shaft and hole designations that, while similar to ISO, have subtle differences in how deviations are calculated. while similar to ISO