Matt, You can buy small rivits that look identical to the originals. They are only short - about 1/4" long - and have twisted flutes on the shaft. You need to drill a hole slightly smaller than the OD of the rivits. The rivits are then hammered into place using a hammer and a solid punch that has a small indent on one end to match the head of the rivit. I suggest that you do a trial using a scrap piece of pipe before attempting to the job. I am sorry that I cannot give you the part no of the rivits because mine were given to me by a friend who had excess from a job. He had to buy them by the packet. They were cheap. Pat