"That's the trap," Herr Fischer warned. "If you treat 'DIN 7161 m' as modern ISO 2768-m, you might get a shaft that is too loose—or a lawsuit."
It has been replaced by the international standard DIN ISO 286-2 . din 7161 pdf
One of the most common points of confusion is the relationship between DIN 7161 and ISO 286. Here is a quick breakdown: "That's the trap," Herr Fischer warned
These items are illustrative—refer to the official standard for exact numeric values. Here is a quick breakdown: These items are
DIN 7161 acts as a bridge between the designer’s dream and the machinist’s reality. While a designer might imagine a perfect 50mm shaft, the machinist knows perfection is impossible. DIN 7161 provides the "Tolerance Tables"—a set of rules that define exactly how much "imperfection" is allowed for the machine to still function perfectly. The Mechanics of the Story