| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a rain gutter hoisting attachment having a high locking effect for allowing efficient mounting work even at a high place. <P>SOLUTION: A nut (a collared nut 20A) is constructed so that a nut body 21 is embedded inside a synthetic resin molding 22. A head 21a of the nut body 21 is buried through the surface of the synthetic resin molding 22, and a portion of the synthetic resin molding 22, protruded from the head 21a of the nut body 21, is formed as a spring washer portion 23. <P>COPYRIGHT: (C)2013,JPO&INPIT |
