DIN 7168 - General dimension tolerancesDIN 7168 is a general tolerance standard for linear and angular dimensions, which could be widely used for inspection to cast iron and cast steel castings. It is a very useful standard for buyers and suppliers.Table 1. Permissible deviations for linear dimensions except for external radii and chamfer heightsToleranceclassPermissible deviations, in mm, for nominal sizes, in mm,

from0.5to3over3up to6over6up to30over30up to120over120up to400over400up to1000over1000up to2000over2000up to4000over4000up to8000over8000up to12000over12000up to16000over16000up to20000

f (fine)0.050.050.10.150.20.30.50.8

m (medium)0.10.10.20.30.50.81.223456

g (coarse)0.150.20.50.81.22345678

sg (very coarse)0.511.523468101212

For nominal sizes below 0.5 mm, the deviations shall be indicated adjacent to the relevant nominal size.