A fastener system for connecting a first member to a second member is described. The fastener system includes a flexible shell having therein a flexible reinforcement member in the form of a frame. The shell and frame can be placed through holes in the two members and filled with a filler material that hardens to form a rigid fastener in order to connect the first and second members together. The fastener system and method can be used even when the holes in the two members are misaligned or are of different sizes.