The traditional design concept of bolt assemblage is broken,and the screw the threaded hole,the gasket,the boss(or the dimpling)are regarded as a whole.

• 打破传统螺钉联接设计思想,把螺钉、螺纹孔、垫片、凸台(或者沉头孔)看成一个整体,进行整体设计。