A linear actuator system including a screw member elongated along a longitudinal axis, the screw member including a threaded portion and an end portion, a nut member coaxially received over the screw member and in threaded engagement with the threaded portion of the screw member, a ring member received over the end portion of the screw member, a flange member connected to the end portion of the screw member, and a threaded member in threaded engagement with the flange member, the threaded member having a distal end protruding toward the ring member.