Lisi Aerospace

Charles Pham

Florent Verdier

Alexandre Berthou

A fastener for assembling at least two structural elements having an aperture, may have a fastener comprising an enlarged head () and a shank () exhibiting, prior to fitting, an outside diameter (D) greater than an inside diameter (D) of the aperture, and a locking portion comprising a screw thread or annular grooves. The fastener further comprises a lubricating sacrificial ring () on the exterior surface of the fastener, extending at least between a distal end of the shank and a proximal end of the locking portion, said ring having, before the fastener is fitted into the structure, an outside diameter greater than a diameter of the aperture. The sacrificial ring comprises a polymer resin forming a matrix encapsulating dispersant molecules and oil molecules. The fastener assembly may apply to the assembly of aircraft structures.

Fastener with lubricating ring for interference fitting, and assembly method using such a fastener

The invention relates to a fastening device () comprising:

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Sevran, France

Charles Pham