Diagram Of Door Lock ((free)) Official

Located inside the latch casing. It provides the tension that pushes the latch bolt back out into the locked position after you open the door.

This is a flat metal bar extending from the back of the cylinder plug. When the key turns the plug, the tailpiece rotates. This rotation is what physically unlocks the door. In a diagram, this looks like a flat metal tongue sticking out of the back of the lock. diagram of door lock

: When the correct key is inserted, its bitting (ridges) pushes the pins to a specific height where the gap between the driver and key pins aligns perfectly with the shear line. Located inside the latch casing