. It specifies the dimensional tolerances and fits for internal diameters (holes) in mechanical engineering. Intertek Inform Key Function
Engineering and manufacturing rely entirely on precision. When designing mating parts—such as a shaft spinning inside a bearing—a fraction of a millimeter determines whether the machine functions smoothly or seizes up entirely.
H7 / g6 │ │ │ └─ Shaft Tolerance (Lowercase Letter) └──────── Hole Tolerance (Uppercase Letter) din 7161 pdf extra quality
A transition fit falls between a clearance and an interference fit. Depending on the actual manufactured dimensions of the individual parts, the assembly may result in either a slight clearance or a slight interference.
: The official source for all DIN standards . They provide current and historical versions in both German and English. When designing mating parts—such as a shaft spinning
DIN 7161 is a historical standard developed by the Deutsches Institut für Normung (German Institute for Standardization). It establishes the foundational system for limits, fits, and tolerances for linear dimensions. Core Purpose
Mathematical formulas for calculating limits must be sharp, legible, and free of scanning artifacts or blurriness. Common Fit Classifications Found in the Standard : The official source for all DIN standards
If you need to verify specific tolerances for an upcoming manufacturing run, let me know the of your part and the desired fit type (e.g., clearance or press fit). I can help you calculate the exact upper and lower deviations you need. Share public link