What describes the head of a flush head Hi-Lok once installed?

A flush head Hi-Lok, once installed, is designed to sit flush with the surface of the material into which it is fastened. This design is essential in aerospace applications where aerodynamic efficiency and aesthetic considerations are critical. When the head is flush with the surface, it minimizes drag and reduces the likelihood of snagging on other objects, which is particularly important in high-speed flight environments.

This characteristic also helps enhance the structural integrity of the assembly, ensuring that there are no protrusions to interfere with surrounding components. The flush design is integral to achieving the required strength while maintaining a smooth surface, which is necessary for performance and safety in aircraft structures.