Rivet pins are essential fasteners used to connect two or more materials permanently. These pins consist of a solid, cylindrical shaft with a head on one end and a tail on the other. To use them, holes are drilled through the materials being joined, and the rivet pin is inserted. The tail end is then deformed, either by hammering or using a rivet gun, which creates a new head and secures the materials in place. Rivet pins are favored for their durability, strength, and resistance to tampering, making them common in industries such as construction, manufacturing, and aerospace. They are available in various sizes, materials, and configurations to match specific project requirements.