标准摘要
[中文适用范围]： 定义H型和Z型；尺寸以数字表示；将仪表尺寸从 0 号到 4 号制成表格；包括两种类型的渗透测量方法。 [外文原描述]： Defines the type H and type Z; dimensions are illustrated by figures; tabulates gauge dimensions from No. 0 up to and including No. 4; includes a method of penetration gauging for both types.
英文名称Cross recesses for screws