JIS B 1012:1985现行
Cross recesses for screws
出版：Japanese Standards Association
专家解读视频
基本信息
标准编号： JIS B 1012:1985
标准类别：Standard
出版单位：Japanese Standards Association
标准页数：21
标准简介
This Japanese Industrial Standard specifies the shape, dimensions and measuring method for cross recesses formed on the heads of machine screws, wood screws, tapping screws and the like, hereinafter referred to as the "cross recess".
等同采用的国际标准
ISO 4757:1983 - Equivalent
