Grooved rivets are specialized fasteners designed for securing fibrous materials like wood and low to medium density plastics.An alternative to wood screws, these rivets have a grooved body that expands during installation, digging into the wood and creating a secure hold. They are for use in closed-end holes. Made of aluminum, rivets are lightweight, nonmagnetic, and have good corrosion resistance. They join material when you only have access to one side. A low-profile domed head creates a finished appearance.They feature a cylindrical body with annular rings,the grooved shaft forms a tighter bond in the pre-drilled hole, giving them extra strength against pullouts.