Create an idea for IFX to be modified per your idea. They monitor the forums and do post replies.
I doubt if any company who has developed an automated fastener program will be willing to share it as they spent considerable time and money to develop the program for internal use. We had a customized fastener library for Unigraphics, back in the day, and it cost us a lot to have EDS develop the code. It was very customizable in that we could add new items easily to the data files.