标准摘要
[中文适用范围]： 指定螺纹尺寸从 M 1.6 到 M 20（包括 M 20）的产品的特性；它推荐了相应产品标准中规定的尺寸测量方法；附件为计算依据 [外文原描述]： Specifies the characteristics of products with thread sizes from M 1,6 up to and including M 20; it recommends a gauging method for the dimensions laid down in the respective product standards; the annex contains the calculation basis
英文名称Countersunk head screws — Head configuration and gauging