When people think about aircraft components and parts, people usually think of the larger, more interesting parts like the engine or the controls. People don’t generally think of the tens of thousands little parts holding together the plane that they are sitting in. Fasteners are, undoubtedly, the unsung heroes of aviation. Aircraft fasteners are a bit more special than regular commercial grade fasteners. While commercial grade fasteners are made with no corrosion-protection, low carbon steel to a tensile strength of 50,000- 60,000 psi, aircraft fasteners are made with corrosion resistant steal and heat-treated to a tensile strength of over 125,000 psi.