A connector device is provided for a curtain wall system of the type having structural members secured to the building framing to define frames to support glazing panels. The glazing panels each have a sash by which they are secured to the frames of structural members to form an outer wall portion of a building. The curtain wall system has connector devices securing one of the glazing panels to the frames of structural members. The connector device comprises a keeper secured to a frame, and a latch mechanism secured opposite the keeper on the sash. The latch mechanism has a latch bolt automatically displaceable to a locking position upon contact with the keeper. The keeper and the latch mechanism cooperate in the locking position to lock the glazing panel to the frame in a secured position. A method for installing the connector device is also provided.