This standard specifies the tolerances of limits and fits, the codes, expressions and explanations of deviations and fits, and the classification of fits. This standard applies to the dimensions of cylindrical and non-cylindrical smooth workpieces.
GB/T 1800.2-1998 history
2020GB/T 1800.1-2020 Geometrical product specifications (GPS)—ISO code system for tolerances on linear sizes—Part 1: Basis of tolerances, deviations and fits
2009GB/T 1800.1-2009 Gemetrical Product Specifications(GPS).Limits and fits.Part 1:Bases of tolerances,deviations and fits
1997GB/T 1800.1-1997 Limits and fits--Based--Part 1: Terminology
1980GB/T 1800-1979 General Tolerance and Fit Standard Tolerance and Basic Deviation
GB/T 1800.2-1998 Limits and fits--Bases--Part 2: Basic rules of tolerances, deviations and fits was changed to GB/T 1800.1-2009 Gemetrical Product Specifications(GPS).Limits and fits.Part 1:Bases of tolerances,deviations and fits.