The lock engages a bolt inside the door.
Turn part of a lock door.
Box strike plate.
The lock cylinder is the meat of the door lock.
Parts of a traditional lock cylinder lock body.
The lock cylinder or key cylinder is the body of the lock where you insert a key and adjust the lock pins before you engage or disengage the lock.
The cylinder contains a series of pins that are shifted into place with the key specific to that particular cylinder.
If a cylinder is sticking has a key broken off in it.
When you unlock your front door you turn the key inside of the lock cylinder.
The combination of pins that need to be pushed to turn the lock is unique to each lock body and matches the grooves of the door s key.
The cylinder is the part that contains the code for the key and determines whether the door locks and unlocks.
In a mechanical lock the lock body uses a series of spring loaded pins to allow or stop the turning.
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The spindle is the bar that connects knobs or levers through the door and operates the lock mechanism.
If you need a new lock because you lost the key to the door you may opt for re keying the cylinder rather than replacing it.