Rear Disc Question

[aboyer]

A while back, I purchased a set of rear disc brake brackets. I am in the process of putting everything together and ran into a problem. I purchased the 80-85 Cadillac Seville rear disc calipers and they came complete with the hardware mounting bolts.

The question that when I mount up the calipers with the metal brackets, the only thing that holds the calipers in place are two 3inch hex head bolts. The brackets and calipers do not have anything to screw itself into to hold in place.

I am not sure if I need to have a nut on the threaded part of the bolt to hold in in place or not. If any one has any insight or picture they can help me out with this. I want to make sure I install everything correctly and don't do any damage on the rear end.

Thanks,
Adam