Need an Alternator Stud & Nut

Who in or around OC has an alternator stud that goes through the block and the support bracket. One of the 3 studs had the nut shear off when I was trying to remove it. I pulled it out and would like to replace it before putting it all back together. Thanks.

This is what I am looking for:

I'll check my bucket o bolts tonight, should have one.