本标准规定了基本尺寸至18mm的孔、轴公差带。本标准主要适用于精密机械和钟表制造业。
This standard specifies the tolerance zones for holes and shafts with a basic dimension up to 18 mm.
This standard is primarily applicable to precision machinery and watch manufacturing.
Contents of GB/T 1803-2003
Foreword i
1 Scope
2 Normative References
3 Terms and Basic Requirements
4 Tolerance Zones for Holes
5 Tolerance Zones for Shafts