Need to know the size of a bolt

I was replacing the rear center brake hose on my 88 Cherokee and I lost the

bolt that screws into the axle and holds it down. Does anybody know what

size is that bolt?

Thanks in advance, Chris

IDK, it is a fine thread something about 5/56.

Newer models use it as a vent tube.

If your's uses it as a vent tube, Junk yard item, or Dealer.

If not, use whatever fits the hole, just make sure it doesn't go in too deep