I got mine at Ace. I don't quite remember the pitch exactly though.. Somethng like 12x1.25 but don't quote me on that. Just take it with you and see which ones thread in.
Agreed. It's a fine thread, but not the finest. 1.25 or 1.5 pitch I think. If you get a short enough one you can eliminate the stupid stud and use a real bolt.