Abstract: A tool for inserting either single loose pins or a plurality of pins or posts carried upon a mounting strip into holes of a substrate, such as a printed circuit board, in a continuous process and including a push blade and a carrier control blade for receiving the pins and the mounting strip which are carried upon a mounting frame. A plurality of ribs protrude upwardly from the push blade, forming grooves therebetween into which the pins to be aligned for insertion are positioned. A slideable, securing blade, carried upon the mounting frame, is moveable from a position away from the pins to a position engaging the pins to secure them in their aligned positions. A locking mechanism on the securing blade cooperates with the mounting frame to lock the securing blade in the engaging position.