Self-plug rivets are a type of blind rivet that is designed to be installed without the need for a mandrel. The rivet has a hollow mandrel that is inserted into the rivet body and then expanded, which forces the mandrel to break off and leave a smooth, flush finish. Self-plug rivets are available in a variety of sizes and materials, so you can choose the right rivet for your specific application. They are typically used in applications where a secure and positive connection is required, but where the appearance of the rivet is important, such as in furniture, appliances, and other consumer products.