Abstract: A threadless bayonet thrust nut assembly for a hydrant, a bayonet thrust nut, and a hydrant having the same, the assembly including the bayonet thrust nut with locking features extending radially therefrom, a hydrant bonnet having retainer lugs disposed around a top opening and corresponding to the locking features, and a lock plate having downwardly extending bayonet extensions, where the locking features are configured to pass through spaces delimited by the retainer lugs when the thrust nut is maneuvered through the opening into the bonnet, where the thrust nut is rotatable between an open position in which the locking features are aligned with the spaces and a closed position in which the locking features are aligned with the retainer lugs, where the bayonet extends of the lock plate are insertable into the spaces when the thrust nut is in the closed position, and where the thrust nut in the closed position is driven against an underlying operating nut disposed with in the bonnet so as to threadlessly sec

Abstract: A lock for fire hydrants includes a stem with an activating end (2), which at the top projects through a fixedly mounted top cover (1), said fire hydrant including a weathershield (7) to be mounted on the activating end (2). The lock includes a fastening means (5) adapted to be fixedly mounted atop the top cover (1) adjacent the activating end (2) of the stem. Further, a locking device (16) is provided for locking the weathershield (7) together with the fastening means (5).