Lock whose knobs activate a latch bolt and is locked by pushing a button; it is used for interior doors.
Knob located on the outer side of the door.
Extended part that manipulates the bolt when turned.
Thin plate fastened to the edge of the door with an opening through which the bolt passes.
Part whose beveled end is activated by a doorknob; it catches automatically in a strike plate when the door is closed.
Knob located on the interior side of the door; it contains a push-button.
Decorative plaque with an opening in the center allowing the doorknob to turn.
Metal threaded peg ending in a head; it screws into a nut.
Hollow cylinder of metal whose lining is threaded to screw onto a corresponding bolt.