Abstract: A torque control fastener system having a fastener nut, a helical wire insert, and a shaft, where the nut and helical wire insert have unique hardness and coefficient of thermal expansion relationships that produce improved performance.
Abstract: A rivetless nut plate for attachment to a panel via a panel bore, having a nut, a washer, and a cage that retains the nut and the washer. The nut plate has a nonactivated state and an activated state. In the activated state a portion of the cage is expanded to grip the panel bore, and the nut has split into two independent sections allowing one section to move throughout a constrained range of motion.
Abstract: A fastener system for use in securing objects, such as stress skinned panels, to a structural support, such as an aircraft spar or cross member. The fastener system includes a radially-expandable collar assembly.