The material to be fastened together has a hole drilled (see recommended holes sizes in our downloadable catalog) through all the materials. With conventional rivets is strongly suggested the back-side or blind side material has the recommended hole size. The rivet is either fully inserted into the hole, OR fully inserted into the nose piece of the rivet tool, and then fully inserted into the application hole. In either case, it is important the rivet is fully inserted into the application hole and the rivet tool is fully against the head of the rivet BEFORE activation the rivet tool’s setting trigger. The rivet is “set” by the tools “jaws” gripping into the “nail” and pulling it into the tool, thus causing the “nail” head to bulge the rivet body blindside and clasp the materials together. The “nail” then breaks at a predetermined location once the strength required to “set” the rivet are reached. The tool with the broken or spent nail is now free from the “set” rivet and the nail is discarded. Our how to use blind rivets guide with our Cordless Rivet Tools. A blind rivet is a two piece assembly containing a “rivet body” and the setting “nail” (also referred to as “mandrel”). High speed wire forming machines, (headers), form solid wire into both the “rivet body” and/or “nail”.