I need a piece of 5/8" rod for a center pin for a boat roller about 12"
long. Will there be any difference in cold versus hot rolled for this app?
Very very little roller movement over the period of time. Think I may just
tack a washer on each end, and keep it simple. Or should I drill and put a
cotter key, at least on one end so it can be removable if needed?

Steve