blind rivet nuts (steel & stainless steel): *are easily installed in blind or open applications. *are a dual purpose fastener.not only do they clamp materials together but also contain a female thread for attaching removable parts. *are particularly suitable for use in materials which are too thin to accomodate a tapped thread. *can be used on a finished surface. *have distinct advantage over weld-nuts and press-nuts. *can be installed with your existing blind rivet nut tools. *are available in large head and csk head.