40mm Long Screw, 7/16 inch nut

thingiverse

This printed screw and nut works effectively with the Replicator 2 printer. To use it, you'll need ReplicatorG 0040 software. For optimal results, set object infill to 20%, layer height at 0.1mm, one shell, feedrate of 41 mm/s for travel and 51 mm/s for non-printing movements, and print temperature at 230 degrees Celsius.