[rotorwrench]

Just to add, rivets expand when squeezed or bucked and fit the bore of the drilled hole much more securely than a bolt. Many steel bridges and buildings that were constructed with rivets over a century ago are still standing and in use today.

In aviation, pins and bolts are utilized more now than ever before but the bore of the drilled hole is reamed to fit the pin or bolt tightly and small increment oversizes are available to repair these if they become loose in service.

Hanson Rivet has all sorts of replacement rivets and they can be heated with a torch to make bucking the rivet easier but they aren't easy for the larger sizes and special equipment has to be either purchased or fabricated to aid in bucking or squeezing them. It helps if you have like minded friends who can get together and do multiple jobs at one time so as to have the help it takes to move and position frames and such for best access & grip on the big pneumatic air hammers and bucking bars.