Generally, lockbolt and collar work together, used to rivet two workpieces, making them a whole body. When riveting, firstly, insert the lockbolt into the basic hole of the workpieces, set the collar onto the working section of the lockbolt from the other side; secondly make the nozzle of the pneumatic riveting gun clamp the lockbolt tail; thirdly pull the gun’s trigger to tense the pin until the tail break with a flush section.