Quick question about threads in a working drawing.

For my semester project, I made a beam-type steam engine in Autodesk Inventor. I thought it would be cool to add real threads to my assembly, so I downloaded the coolorange (auto thread modeler) addon.

It looks really nice with it all assembled whotnot, but my professor doesn't like the threads showing in the detail drawings. Is this frowned upon in the industry or is it his personal preference? I have to go through each part and get rid of the threads now, which is a hassle...


Thanks,