on the lower back side of a brake caliper there are 2 bolts. 1 bolts the caliper to the vehicle, the other does what?? is it some sort of adjustment? if so,,, all the way out is? all the way in is?
It’s hard to visualize what you’re asking? Could it be the steering limiter bolt that limits travel? Could you post a picture?
You know now that you described it I have seen them on UTV's like. If its what I'm thinking its the way you take up any play in the pad and keep it from rattling as it wears.