| 摘要 |
A pair of threaded fasteners which are attachable to each other by means of a plug and socket joint so that each of the pair may be individually threaded into separate members which are then joined together. The plug of the male fastener of the pair is of a cylindrical shape with leaves hinged in recesses in the plug wall, with the female fastener fitted with a cylindrical socket to fit the plug, with recesses in the socket wall to retain the leaves of the male plug. The leaves of the male plug may be spring-biased.
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