Based on your feedback to firstname.lastname@example.org, Developer Consultant, Philippe Leefsma, has provided an update to this month's Autodesk Developer Network (ADN) Plugin of the Month. You can download it from the Autodesk Labs site:
This update ensures that the minimal thread pitch allowed to be modelized is 0.0007 inches (or 0.01778 millimeters). Philippe notes that you should keep in mind that around this small scale, the quality of the modelization will look very poor in Inventor. The source code is included for those who would like to examine just how it works or extend the functionality for themselves.
The release-feedback-release cycle is alive in the lab.