PROJECTION NUT FEEDER

An air cylinder is joined to a guide pipe via a joining member, a stopper member is arranged in a position where the guide pipe and a feed pipe for feeding a projection nut are coupled to form a temporary locking chamber of the nut, a sliding rod obtained by elongating a piston rod itself is integrated with a guide rod having a diameter smaller than that of the sliding rod and entering a screw hole, relative positions of the temporary locking chamber and a feed rod are set such that the screw hole of the nut stopped in the temporary locking chamber is coaxial with the feed rod, a gap is formed between the sliding rod and the guide pipe while a support hole having a diameter smaller than an inner diameter of the guide pipe is formed in an end part of the guide pipe on the temporary locking chamber side, and in a state where the feed rod is retracted, the sliding rod is supported in a state where a slight sliding gap is left in the support hole.