| 摘要 |
PROBLEM TO BE SOLVED: To provide a screw capable of increasing productivity by allowing the screw to be screwed even in a rather largely inclined state relative to the axis of a screw hole. SOLUTION: The angleαof a thread at a tip part 3 is increased more than the angleβof the thread at a portion 5 other than the tip part. Thereby, the screw can be screwed for fastening even in the rather largely inclined state relative to the axis of the screw hole 8 to increase the productivity. Also, even if the screw is screwed into the screw hole 8 in the state that the tip part 3 is inclined, the thread 6 of the portion 5 other than the tip part is screwed into the screw hole (female screw). Thus the inclination of the screw 1 can be eliminated naturally.
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