Blind rivets are tubular fasteners with a center mandrel. They are inserted into drilled holes in the parts to be joined, and a tool is used to draw the mandrel through the body of the rivet. The blind end expands, and the mandrel is snapped off. Stainless blind rivets are made with grade 18-8 stainless steel barrel and grade 18-8 stainless steel mandrel. They are corrosion resistant and used for outdoor applications in roofing, flashing and restoration applications.