What are the two components that enable a lockbolt to hold materials together?

The correct answer is the combination of the pin and collar. In the context of lockbolts, the pin and collar function together to create a secure fastening method.

The pin is inserted through the materials being joined and through the collar. Once the pin is properly seated, the collar is swaged or deformed around the pin, creating a mechanical interlock. This interlocking mechanism effectively distributes the load, making it resistant to vibrations and shear forces, which is essential in aerospace applications where reliability is critical.

Understanding the role of each component underscores the importance of the pin and collar in achieving a robust and durable assembly that meets stringent aerospace standards.