I just used my fingers to tighten it, there was no way i could secure it any other way. I just made sure the other two bolts were torqued to ensure it doesnt fall off.

Good luck with getting your nut back!

Thanks.... I ended up reattaching the stock airbox so I could go to work... On the first turn I took, the nut flew out (luckily I heard it and could safely stop and pick it up - saved myself $0.39)

Will be trying again later... Possibly after getting a socket extension bar. Might try the hand-tighten route first.