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tubular lockclick to hear

Lock whose knobs activate a latch bolt and is locked by pushing a button; it is used for interior doors.
tubular lock outside knob spindle faceplate latch bolt push-button inside knob rose bolt nut

outside knob click to hear

Knob located on the outer side of the door.

spindle click to hear

Extended part that manipulates the bolt when turned.

faceplate click to hear

Thin plate fastened to the edge of the door with an opening through which the bolt passes.

latch bolt click to hear

Part whose beveled end is activated by a doorknob; it catches automatically in a strike plate when the door is closed.

push-button click to hear

Button that activates the locking mechanism when pushed.

inside knob click to hear

Knob located on the interior side of the door; it contains a push-button.

rose click to hear

Decorative plaque with an opening in the center allowing the doorknob to turn.

bolt click to hear

Metal threaded peg ending in a head; it screws into a nut.

nut click to hear

Hollow cylinder of metal whose lining is threaded to screw onto a corresponding bolt.