本部分旨在简化图纸指示，并规定四个公差等级的一般公差。它适用于通过金属去除或由金属板形成的工件的尺寸。它包含三个表和一个关于尺寸一般公差背后概念的资料性附录。

This part is intended to simplify drawing indications and specifies general tolerances in four tolerance classes. It applies to the dimensions of workpieces that are produced by metal removal or are formed from sheet metal. It contains three tables and an informative annex with regard to concepts behind general tolerancing of dimensions.