Anyone know what size bolt holds the oil cooler in place?

[Tech-Mechanic]

'07 KJ w/ 3.7L. My oil cooler bolts are missing. The previous owner had the bracket jammed behind the one for the condenser to keep it in place. Nothing appears to be damaged, I think I just need to go buy a bolt or two. Anyone happen to know the thread size?

 

[LibertyTC]

Closest Parts fiche we have available is a 2006. The oil cooler hardware dimensions should be in there.
http://www.colorado4wheel.com/manuals/Jeep/KJ/06kj_PARTS_FICHE.pdf