This standard specifies the limit deviations of the dimensional elements formed by cold stamping in the drawings of automotive product parts without tolerances noted. This standard applies to the limit deviations of the un-toleranced dimensions in the drawings of automotive product parts that have been processed by cold stamping.
QC/T 268-1999 history
2023QC/T 268-2023 Permissible automobile cold stamping variations in dimensions without tolerance indication
1999QC/T 268-1999 Limit Deviation of Dimensions without Tolerance Note for Automobile Cold Stamping Processed Parts
QC/T 268-1999 Limit Deviation of Dimensions without Tolerance Note for Automobile Cold Stamping Processed Parts has been changed from ZB T04006.3-1989 .