Caliper Pins

Today, I had the two "bolts" that hold the caliper in place, snap in half. We fished all of the pieces out, and changed the bolts. While we were at Autozone, they told us that there were oversized bolts, or pins, whatever you wanna call them. When I put everything back together, I noticed what seemed like alot of play in the caliper. It moved and seemed like it was really loose. I was wondering if it was supposed to be that way. I was also wondering why they would have oversized bolts, and what the advantages, if any, there were to having those. Thanks for the input.

my stock ones do that.. and the caliper also rubs on the rotor...remember to grease the pins too

my stock ones do that.. and the caliper also rubs on the rotor...remember to grease the pins too

I would not use grease on the pins, especially bearing grease. I've heard it will bind them up. A little never-seize on the threads is all I use.
The calipers should slide on the pins. They will feel loose until you press the brake pedal and the pads tighten up. After that the caliper slides on the pins to allow the pads to release from the rotor when the pedal is released.

Oversized bolts are usually used if your threads are somewhat stripped, The oversized bolt is a bit thicker and basically cuts new threads into the old hole. They are used a lot on oil pans.