There are several types of fasteners used for attaching aluminum sheets to a structure, including: 1. Rivets: These are permanent fasteners that join two pieces by deforming the rivet material. 2. Screws: These are threaded fasteners that can be inserted and removed as needed. 3. Bolts: Similar to screws, bolts are used with nuts to secure aluminum sheets. 4. Adhesives: Chemical adhesives can be used for bonding aluminum sheets without visible fasteners. 5. Welding: Although not a fastener, welding can join aluminum sheets permanently. 6. Clips and Clamps: These are used for temporary or non-structural attachment. 7. Self-tapping screws: These screws create their own threads in the material being fastened. Each type has its own advantages and is chosen based on the specific requirements of the project.