A rivet is a permanent mechanical fastener widely used in industry. Used in many applications where light weight & high strength are critical, for example in an aircraft. In addition, these are also useful for many sheet-metal alloys, which are preferably not welded, as deformation and modification of material can occur. Types of Rivets Solid Rivets: Round Head, Flat Head and CSK headBreak Stem Rivets or Pop Rivet: Dome head, CSK, Large Flange, Open type , Closed type etc.Blind Rivet Nuts or Pop Nuts