Broken shock mounting bolt...

Guys, turns out the broken shock stud wasn't broken. Only the stud nut came off and allowed the shock to work its way off the stud. I couldn't tell that until removing both studs. The studs are otherwise in good shape.

The nut that was in place, it easily threads onto the other stud that I thought was broken … so no thread damage.

So, now all I need is the nut for the stud … or a nut and a big ole washer. Should I just buy a nut and washer from yee ole local hardware store?