| 摘要 |
<P>PROBLEM TO BE SOLVED: To constantly prevent looseness of a nut that is usually fixed with axial force generated by bolt fastening, wherein a nut loosening phenomenon may occur as loosening force larger than the axial force due to iterative vibration and shock acts on the nut. <P>SOLUTION: For a nut having a flange surface, an external thread in the same direction with a female thread of the nut is cut on the flange surface, and a lock nut is attached to a male thread thereof to prevent loosening. <P>COPYRIGHT: (C)2013,JPO&INPIT |
