| 摘要 |
A two piece tack rivet includes a stem and a locking collar. The stem has a head at a first end, a grooved stem region extending from an opposing second end toward the first end, and a cylindrical section between the head and the grooved stem region. The cylindrical section includes a plurality of spin prevention embellishments such as knurls or spline-like surface textures. The cylin spin prevention embellishments may be adapted to provide positive engagement in a hole in a work piece. The locking collar is hollow and adapted to be deformably joined to the grooved stem region. The locking collar may include a flange adapted to bear against an adjacent surface of the work piece.
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