| 摘要 |
PROBLEM TO BE SOLVED: To provide a bolt capable of effectively preventing from being galled/seized by oblique assembling. SOLUTION: In this bolt 1P, a notched shape bent at the border thereof with a tip thread crest 33 is provided at the start end part of the complete threads of a thread part 2 on a shaft part 4, and the angle of the bent notched part is formed of an angleαof -5 to -30°on the bolt head part inside and an angleβof 135 to 170°on the end part outside relative to the lead of the threads. In this bolt 3P, a roof-like slide part 333 is provided at the tip thread crest, and the same bent notched inside 31 and outside 32 are formed at the front and rear of the slide part 333. The incomplete threads at the inlet of a nut 5 are smoothly guided by the bolts 1P or 3P. COPYRIGHT: (C)2004,JPO
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