| 摘要 |
In a self-locking screw (30) for joining parts (10, 20) together, the length "l" of the cylindrical journal part (34) is greater than the thickness "h" of the part (10) assembled on top of the tapped part (20), and the end (37) of the screw thread (36) on the cylindrical journal part side blends out gradually. As an alternative, the overall length of the screw (30) is greater than the sum, on the one hand, of the thickness (h2) of the part (10) assembled on top of the tapped part (20) and, on the other hand, of the depth "p" of the tapping (23) which is itself less than the length of the orifice (28) passing through the thickness of the tapped part, the start (38) of the screw thread (36) at the end of the screw leading in gradually. <IMAGE>
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