difference is that over time the pla will wear the nylon in the nut doesn;t. mind you if it works then you shouldn't be moving the nut that often anyway.
so - good for you :-)

I have a mate who works in a local brewery and gets really upset when I mention rude phrases like: 'buying nuts and bolts'.
Apparently that's what the factory engineering stores is for ;-)
So I always have locking nuts of various sizes at hand.

He's due for early retirement next year.
I suspect the stores will see a mysterious spate of mass dissappearances just before he leaves ;-)