| 摘要 |
<p>The present invention relates to a bolt and nut combination. The bolt and nut combination comprises: a bolt having a head part, a cylindrical column part extended from the head part, and a spiral screw structure formed on the outer circumference of the column part; and a bolt having a cylindrical through-hole corresponding to the cylindrical column part of the bolt, and a spiral screw structure formed on the inner circumference of the through-hole. A clamping position holding unit engaged at a specific position in a clamped state is formed on the outer circumference of the column part of the bolt and the inner circumference of the through-hole of the nut. Thus, the present invention can effectively prevent the clamped state of the bolt and the nut from being loosen by the frictional force caused by the rotation of an object to be clamped and external force directly applied to the nut without the movement of the object to be clamped in a state where the bolt is clamped by one nut without a double or triple nut.</p> |
