US Patent 9188144 Plastic blind rivet

A plastic blind rivet includes a sleeve with a plurality of legs formed by a plurality of slits of constant width. A body lock is formed on the inside of the rivet sleeve, and a mandrel lock is formed in the shank of the mandrel. When the rivet is set, the body lock and mandrel lock are engaged so as to maintain the legs in an expanded condition. A stopper is formed in the mandrel shank and abutments formed in the sleeve body. During rivet setting, the stopper and abutments engage to limit further deformation of the sleeve legs.