| 摘要 |
PROBLEM TO BE SOLVED: To make an easy and appropriate integration of a metallic part constituting a main body of a nut having a locking function and a synthetic resin ring body stored in the metallic part.SOLUTION: This nut comprises a nut main body 10 having a female thread part 10a inside it and an extended part 11 enclosing an opening portion of the female thread part 10a at an end part 10b of this nut main body 10 and at the same time a metallic part 1 of which surface has already been treated and a synthetic resin plastic ring body 2 where a ring outer peripheral part 20 is integrated at the inner side part of the extended part 11 through an insert molding with the metallic part 1 being applied as an inserted item and a ring inner diameter is made substantially equal to the inner diameter of the nut main body 10. One or more recesses 11a are arranged inside the extended part 11 and a locking part 20a entered into the recesses 11a is formed at the ring outer peripheral part 20 of the ring body 2 through the molding process. |
