Fastener with magnetically actuated positive lock plug insert

摘要

A fastener having an enlarged head and a threaded portion with an interior cavity. A plug mounted in the cavity configured similarly thereto having an enlarged head generally the same outer diameter as the enlarged end of the fastener and abutting against the same closing off the opening leading into the cavity. The plug is releasably locked in the cavity and released by magnetic action when the releasable lock is released.