Screwing radiator to top of case?

[Barso]

I am currently trying to fit my 240mm radiator to the top of my coolermaster cosmos case.
But the crews they have provided are to long.
Is it okay to screw throogh the radiator grills/mesh or will this damage affect the radiator cooling?

 

[.:SAmSuNG:.]

It will put a hole in the rad prolly so get the correct screws. Maybe put the fans between the rad and the case?

 

[JonJ678]

Don't screw through the fins, that's a very bad call. Get shorter screws, ask for M3 in whatever length you need. I bought 40 12mm M3 screws, with nuts and washers, for £1.83. 12mm happens to be the right length for my radiators.

Alternatively you're going to be taking a hacksaw and file / grinder to some screws