I tried to find this among the other topics without much success and I've had this problem for a couple of years now. Surely, I'm not the only one. If I make an external thread using the tool in part modeling and then add some feature on the thread, like a keyway, the 2D drawing application will not recognize the threaded feature. In turn, it won't display the cosmetic thread lines nor will it provide the thread callout. Any suggestions?