| 摘要 |
PURPOSE: A bolt and a nut are provided to efficiently prevent unfastening even with one connector by directly installing a device not unfastened by vibration to a body of one bolt and nut. CONSTITUTION: A bolt(11) and a nut(13) are used as a connector for fixing a material to be fixed. Herein, in connecting the material by using only the bolt, the bolt is axially rotated to be connected in a screw hole. The material is contacted with a point of a screw pitch(17) of the bolt. A groove(21) formed on an outer diameter circumference(19) of the screw pitch is connected while pushed to one side. The connected point of the screw pitch is mutually contacted by being elastically adhered to the outside. Thus, the release caused by vibration is prevented.
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