Rivet gun

A rivet gun, also known as a pneumatic hammer, is a type of tool used to drive rivets. The rivet gun is used on the manufactured head side of the rivet and a bucking bar is used on the buck-tail side of the rivet. The energy from the hammer in the rivet gun drives the work and the rivet against the inertia of the bucking bar. As a result, the tail of the rivet is deformed and work-hardened. At the same time the work is tightly drawn together and retained between the rivet head and the broadened and flattened tail. Nearly all rivet guns are pneumatically powered. Those rivet guns used to drive rivets in structural steel are quite large while those used in aircraft assembly are easily held in one hand. A rivet gun differs from an air hammer in the precision of the driving force.