本国际标准规定了带圆角和部分圆柱形固定孔的硬质材料嵌件的尺寸。这些嵌件主要用于使用沉头螺钉或任何其他固定元件（如销锁）安装在车削和镗孔工具上。

This International Standard specifies the dimensions of hard material inserts with rounded corners and with a partly cylindrical fixing hole. These inserts are primarily intended to be mounted on turning and boring tools using a countersunk head screw or any other fixing element, such as a pin lock.