The last few weeks we've been manufacturing these "rivet-like" stainless parts for a customer. Each part has a couple different tapers, so it can be pressed into place for proper fitment. They needed to be manufactured from stainless steel due to a corrosive environment. If you have questions or need quotations, call us at (800)833-6417 and we'll have one of our company sales associates come and see you . . . and thank you for viewing our blog !