Hope this is the right place to post this...

Been doing a head gasket job on the wife's 2000 Blazer, and upon almost being done I find myself with one 3/8-16 nut left over. (I NEVER have left over unaccounted for bolts/nuts!)

Now the only place I can think of this may belong is the exhaust manifold stud on the driver's side (red circle in the image). Is there anything on this stud other than that radiator hose support bracket? (my helper took that side apart)

I also have a "lonely" stud on the fuse/relay box bracket (blue circle).

Almost seems like there should be a ground strap between those two...

 

The stud next to the fuse box should be for holding down the bottom part of the factory air filter box.

 

Yeahhhh had I just not "presumed" something was missing and kept re-assembling I would've realized that. lol

Also confirmed that there's nothing else on that exhaust manifold stud.

All is well.

Thanks!