Self-Clinching Nuts
Self-Clinching fasteners -- sometimes called swage nuts -- work by utilizing a serrated clinching mechanism. When the part is pressed into the hole, the material presses into the serrations (knurling), effectively locking the fastener into the panel, providing excellent torque-out and push-out performance. The inserted shank typically has three diameters: a main shaft which fits the hole closely, a thin smaller-diameter, and a larger-diameter serrated clinching ring.