12/17/2023 0 Comments Blind rivet nutA hole, or core, usually extends the length of the body. The diameter of the rivet body determines the rivet size. The tube portion is called the shank and the flared portion is called the head. The body, or sleeve, looks like a small tube that is flared on one end. Photo courtesy Emhart Fastening Teknologies How They Work A blind rivet is a two-piece fastener that consists of a headed, hollow rivet body and a solid mandrel. More fixed, semiautomatic workstations are being used to feed and insert blind rivets. Since rivets were often inaccessible from both sides of the work, this assembly process was extremely slow and very time consuming. Before blind rivets were widely accepted, installation of solid aluminum rivets in fuselages, wings and other airframe components typically required two assemblers: one person with a rivet hammer on one side of the structure and a second person with a bucking bar on the other side. Blind rivets also trace their roots to the aircraft industry. The blind rivet was originally developed as a replacement fastener for solid rivets where service repair was required. Because blind rivets are installed from only one side of the component, they are cost-efficient and versatile. The back, or blind side, is mechanically expanded to form a bulb or upset head. Unlike solid rivets, blind rivets can be inserted and fully installed in a joint from only one side of a part or structure, "blind" to the opposite side. Blind rivets are permanently installed fasteners that sometimes exceed the performance criteria for comparable solid rivets.
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