在引进国外技术中,有一种结构较为紧凑,可靠性好的防松螺母,其结构如图示。此种螺母外形尺寸与普通螺母相同,牙形也是标准的,只是在尾部镶有一块簧片。簧片外径要大于螺纹大径D,簧片的内径较螺纹小径D_1大0.2～0.3mm,簧片的厚度小于1/4标准螺距(如M10螺纹的螺距为1.5,则簧片厚度为0.3mm)。因此簧片与螺母尾部最后一牙不是标准间距。当螺栓旋入 In the introduction of foreign technology, there is a more compact structure, good reliability of the lock nut, the structure shown. The nuts are the same size as normal nuts, and the tooth shape is also standard, except that a piece of reed is inlaid at the tail. Reed diameter greater than the thread diameter D, Reed diameter larger than the thread diameter D_1 0.2 ~ 0.3mm, Reed thickness less than 1/4 standard pitch (such as M10 thread pitch is 1.5, the reed thickness of 0.3 mm). Therefore, reed and nut the last tooth is not the standard pitch. When screwed in