| 摘要 |
PROBLEM TO BE SOLVED: To provide a fastener which prevents a bolt and a nut of a tightening fastener from getting loose, even when the material of a structural member that is a member to be tightened comprises a material different from those of the bolt and the nut, and even when a temperature environment where the structural member is used, varies with a relatively great extent. SOLUTION: This fastener is used for tightening two or more of the members to be tightened, and is constituted of the bolt and the nut, a thermal expansion coefficient of the fastener is different from that of a tightening member, a face contacting with the member to be tightened of a head part of the bolt is formed into a conical face, and a face contacting with the member to be tightened of the nut is formed into a conical face, in the fastener. COPYRIGHT: (C)2011,JPO&INPIT |
