| 摘要 |
<p>A blind one piece expansible fastener which has a tubular body (12) with an annular flanged head portion (11) at one end thereof. The upper portion of the tubular body which extends from the flanged head portion has a constant wall thickness. The intermediate tubular portion (14) of the fastener which can be upset has its wall thickness increasing towards the lower portion (15), which lower portion is internally threaded. The intermediate portion is buckled radially outwardly against an apertured work to secure the fastener thereto. The exterior diameter of the tubular body is of a constant diameter.</p> |
