我国国家标准总局于七九年颁布了新的《公差与配合》国家标准GB1800～1804—79,并于八○年七月一日起开始执行。由于《公差与配合》是一项涉及面广、影响大的重要基础标准,因此它的制订、颁布和贯彻执行是我国标准化工作的一件大事。公差与配合的标准化,便于机械工业广泛地组织专业化协作生产,它是实现互换性生产的一个基本条件,是机械行业进行产品设计、工艺设计、工装设计 In 1979, China’s State Administration of Standards and Industry promulgated the new national standard GB1800-1804-79 of “Tolerance and Cooperation” and started its implementation on July 1, Since “tolerance and cooperation” is an important basic standard that involves a wide range of issues and has a great impact, its formulation, promulgation and implementation are a major event in our country’s standardization work. Standardization of tolerance and cooperation, to facilitate the machinery industry to extensively organize specialized collaborative production, it is to achieve an interchangeable production of a basic condition is the mechanical industry product design, process design, tooling design