Abstract: An axially separable fastener for securing a structure is provided to detach upon command of an electric signal. The fastener includes a metal bolt, an external nut, a frangible ampoule containing a liquid metal eutectic and an internal plug. The bolt has a metal shank with proximal and distal ends. The shank includes a first head at the proximal end, and a first helical external thread and an axial bore with a first helical internal thread at the distal end. The fastener secures a structure in compression between the first head and the external nut. The external nut screws onto the first external thread. The ampoule contains a liquid metal eutectic. The ampoule is insertable into the bore. The internal plug includes a second head, an actuator mechanism, and an auger opposite thereto. The internal plug has a second helical external thread between the second head and the auger for screwing into the bore along the first internal thread.