What is a key advantage of using Hi-Lok fasteners in aircraft construction?

The use of Hi-Lok fasteners in aircraft construction provides a significant advantage due to their design, which helps prevent over-torquing during installation. Hi-Lok fasteners are engineered with a feature that allows them to reach a predetermined torque value that, when met, causes a part to break off, thereby ensuring that the fastener is tightened to the correct specification without the risk of excessive torque being applied. This reduces the possibility of damaging the fastener or the materials being joined, which is crucial for maintaining the structural integrity of the aircraft.

While the other options such as corrosion resistance, weight reduction, and installation speed may also be noteworthy characteristics of certain fasteners, the specific design feature of Hi-Lok fasteners that prevents over-torquing is a distinctive advantage that enhances the safety and performance of aircraft assemblies.