The construction of a typical aircraft is quite complex, requiring millions of parts to establish the entire assembly. For a Boeing 747, around six million parts are needed, half of which are solely made up of fasteners. Fasteners are crucial for any assembly, creating temporary or permanent joints to secure parts together. Aircraft fasteners come in many types, some of which are used for structures big and small. While screws are often an overlooked component of many assemblies, they are crucial for the construction of a typical aircraft. Depending on the area in question, many types of screws may be used, examples including the AN526 screw, the AN366 screw, the truss head screw, and many others. In this blog, we will discuss some of the most common types of screws that are found on typical aircraft assemblies, allowing you to better understand the role of each and their importance.