Stupid question about self tapping screws on case fans

[Hostile_18]

I feel daft asking this but I can't find information on it online.

Basically I've got good fans, but do like swapping my PC case every once in a while. Does reinstalling PC fans in new cases with the same self tapping screws make them weaker? Like if I move them into a third case with they become weak or is it a case of the groves are only made the first time, so nothing to worry about on re-instalation else where?

 

[Hostile_18]

Brilliant, Thank you. That's put my mind at rest and I can indulge my case upgrade itch regularly lol.

 

[Hostile_18]

Ok time to turn the screws. Is each fan screw slightly unique to its hole? Or will any screw within the same fan be fine and not cut new grooves?

 

[Hostile_18]

Any screw will be fine, you are over thinking it.

I've got a box of old fans that every now and then I end up using for something - I definitely haven't still got the original screws that went with them, and never had an issue

Thank you. Yeah I just like having everything perfect, but definitely got the answers I needed .