Yes Bill! There are 3 rivets!! Talk to me!! Would these rivets be holding the drum to the hub? I don't recall ever dealing with rivets on a brake drum before. Why in the world would a brake drum be rivetd to the hub and how are you supposed to do a brake job? It's unlikely that this is the first brake job this truck has had, although truthfully I don't remember it ever having one before. Talk to me, Bill!