Diagram 1 - New cross feed lead screw ProjectsInMetal.com 2012 R. James Schroeder Diagram #2 Bearing end of new lead screw and shaft key. ProjectsInMetal.com 2012 R. James Schroeder Diagram #3 - Acetal nut holder and retainer plate. ProjectsInMetal.com 2012 R. James Schroeder Diagram #4 Coordinates for retainer holes, starting from the center of the nut cavity. ProjectsInMetal.com 2012 R. James Schroeder