MakerBot Print is our newest print-prepration software, which supports native CAD files and STL assemblies,
allows you to interact with all your printers via the Cloud, and many other exciting new features.
Most of the thread pitches you'd use way too fine to be 3D printed on most printers. If you look at 3D printed nut-and-bolt combinations, they always have pitch way bigger than standard metal screws for this reason.
However, if you just make the hole a hair smaller, metal screws have no trouble cutting precise threads in PLA/ABS, which is how these are designed.