| 摘要 |
According to the present invention, a bolt for loosening prevention is extended to a bolt head part and a side of the bolt head part, contains a bolt body part having male threads along the border of a circumferential surface and a part of the female thread has a portion which is in close contact with a female thread formed in a nut, based on a sectional area. Additionally, according to the present invention, the bolt for loosening prevention has a hollow at the center, and comprises a nut body part having a female thread along the circumference of the inner circumferential surface of the hollow, wherein a part of the female thread has an adjoining portion which is closely adjoined to a male thread formed in a bolt, based on a section. According to the present invention, a part of a thread has an adjoined portion; therefore, the bolt for loosening prevention can be safely used since the phenomenon of loosening of a connecting member can be evidently reduced through the application of vibration and shock in the case of a spiral coupling to a corresponding combining member. Additionally, loosening can be prevented while using a common corresponding combining member already generally used, thereby providing convenience. |
