Air Series SP120 Radiator (4x120) screws

I see that these fans are 25mm thick. My radiators came with 30mm screws. Only other option i see is to buy other screws but can only find 35mm.





2 questions.



Will 30mm be too much to mount fans directly to the radiator, not going through the case without busting the fins? Fans---Rad---Case



Will 30mm work to mount in reverse, with the screw going through the case, fan and into rad? Case----Fans---Rad