Rivet nuts are internally threaded fasteners that are anchored from just one side of a workpiece or application. They’re an excellent component to use to add strength to thin materials, which is particularly important as the manufacturing trend is moving toward thinner and lighter substrates — such as soft sheet metals, thin hardened aluminum or steel skins, plastics, composites, and/or carbon fiber.(…)
via When are rivet nuts an ideal choice for an application? | Fastener Engineering.