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Blind rivets, also known as pop rivets and break stem rivets, are generally used to join materials in situations where there is no access to the rear of the materials. Truss blind rivets consist of a mandrel or stem and a hat, also called the head, which deforms when the mandrel is pulled to create a second hat at the rear end of the joint. Additionally, a pilot hole is required to install the rivet using a riveter. Truss blind rivets can withstand higher load pressures and are used in structural applications.