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安装钢丝螺套的螺孔与标准螺纹的螺孔相比较,只是螺纹的大径、中径及小径不同,安装钢丝螺套的螺孔大、中、小径比标准螺孔的大1.299p(p—螺距)。
The screw holes for installing the steel thread sleeve are compared with the thread holes of the standard thread except for the large diameter, the medium diameter and the small diameter of the thread, the large, medium and small diameters of the threaded holes for installing the steel thread sleeve are larger than the standard screw holes by 1.299 p - pitch).