Dave;

Caliper bolts should have a provision for secondary retention...this is satisfied by the locking pellet in bolt (See: http://www.longlok.com/s.nl/it.A/id.42693/.f ) or Loktite for a plain bolt...some say not to reuse Nylock nuts, although Carrol Smith who knows a thing or two and has more experience than any of us here, disagrees (ref: https://en.wikipedia.org/wiki/Nyloc_nut#Reuse_safety )...I would apply that to similarly to Bolts with nylon locking pellets: OK to reuse...but if you also applied Loktite when you reinstalled, you're in the belt and suspenders class, and can rest easy!

Cheers