The Hyper 212 EVO, and probably any other Socket 1155 cooler, is only designed to fit boards with an existing backplate
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Can you confirm that the EVO does not come with backplate?
It does come with a backplate, that's the funky looking thing in the top right of the picture labeled "All-in-one Mounting Solution"
The Standoff you recommended has a two week delivery time.
Metric Aluminum Female Threaded Hex Standoff, 8mm Hex, 6mm Length, M3 Screw Size
http://www.mcmaster.com/#95947a310/=oridfb
Is there anything else you recommend that can substitute this?