i think these are what you are looking for. they will fit corsair hydro series and any other 6/32 thread rad. some are m3 or m4 tho so check first.
http://www.overclockers.co.uk/showproduct.php?prodid=WC-224-XS&groupid=962&catid=1523&subcat=1545
Where do I get long enough screws to attach the pull fan? As the 120mm rad already comes with one fan attached.
Double Post sorry.
Hmm ok, I have x2 SP120's on my h100i and do not remember it coming with screws.