A fastening device for feeding fasteners to a workpiece and for joining it, the fastening device comprising a fastening tool, a fastening device system. The fastening device including a magazine arrangement mounted on the fastening tool. The magazine arrangement having a magazine for holding a fastener, a magazine plate, and a base plate. The magazine plate includes a plate body and a closure arrangement with a closure slider adapted to move between an open position and a closed position, and a toggle mechanism adapted to move the closure slider from the closed position to the open position.