| 摘要 |
<p>A fastening assembly for fastening a wafer (10) to an article of merchandise (12) and comprising a locking mechanism in a housing (14) and a fastener element (16) having an expansive head (18) and a shank (20), formed with axially spaced circumferential grooves 22 for releasable locking engagement with a locking mechanism, the head having a conical exterior with an apex angle less than ninety degrees so that if the fastener element should fall onto a flat surface, the shank will slant upwardly less than forty five degrees; and downward pressure on the tip of the shank will cause it to tilt downwardly safely and without appreciable resistance.</p> |
