| 摘要 |
PROBLEM TO BE SOLVED: To provide a double threaded stud fastening device requiring no torque (rotation force) of an engagement nut for a threaded stud of a nut or a stud, and keeping desired attaching condition of the stud to a plastic member to be attached. SOLUTION: This fastening device 21 using a double threaded stud 23 constitutes a first threaded portion 41 is attached to a plastic member 27, a second threaded portion 45 engaged with a nut 25, and a horizontal projecting portion disposed between both thread portions 41, 45, or a flange 43. The fastening device 21 includes a third portion 49 connected to the second threaded portion 45 by a reduced diameter neck 47. |
