Semi-hex body stainless steel rivet nuts are installed into a hexagonal hole and offer significantly increased resistance to spin-out.
When selecting a rivet nut for your application, pay close attention to the grip range. The thickness of the material in which you're installing the rivet nuts should fall inside the grip range.
With stainless steel rivet nuts, best practice is to use a plated steel screw or bolt. If you intend to use a stainless steel screw or bolt with a stainless steel nut of any type, please be aware of the possibility of thread galling (cold welding). Cold welding can be prevented with the use of a suitable thread lubricant.