Is it a good idea to have only 2 screws on each fan?

[Saleh_5]

I got a new fan but it didnt come with screws so i took out 2 screws of the front fans and i installed the new fan in the back with only 2 screws. should i buy 4 screws or is it okay to leave the fans like this? they are not moving when im touching them.

 

[Susquehannock]

Should be fine. Mounted at opposite corners.

 

[the nerd 389]

If you can scavenge some more, then you should try to get at least three per fan. Otherwise, it places greater stress on the fan's frame than it was designed for. When this happens, it's more likely that the bearing seals will come loose prematurely and the oil will leak out, effectively destroying the bearing.

I've had that happen to a few fans with poorly designed tool-free mounts as well.

 

[R4DIO4CT1VE]

yeah you're fine, you could use zip-ties or twist ties for the other corners if you wanted to.