Patent ID: 7654909

Claim:
A hybrid fastening system comprising a titanium or titanium-alloy material threaded pin component; a mating titanium or titanium-alloy material swage collar component having internal dimensions approximating the dimension of and conformable to threads of the threaded pin component, wherein at least one of the threaded pin component and the swage collar component is formed of an ultra-fine grain titanium material or an ultra-fine grain titanium alloy material; and a corrosion-resistant, curable organic coating material on the titanium or titanium-alloy material threaded pin component and on the titanium or titanium-alloy material swage collar component, wherein the coating material comprises a phenolic resin and an organic solvent, and wherein at least one of the threaded pin component or the swage collar component is not fully heat-treated upon application of the coating material to the threaded pin and swage collar components.