A cylinder lock is a
lock in constructed with a
cylinder that a
locksmith can easily unscrew to facilitate rekeying. The cylinder may contain any of a variety of locking mechanisms, including the
pin tumbler lock, the
wafer tumbler lock and the
disc tumbler lock.The first main advantage to a cylinder lock is that the cylinder may be changed without altering the boltwork. Removing the cylinder requires only loosening a set screw, then unscrewing the cylinder from the boltwork. The second is that it is usually possible to obtain, from a lock manufacturer, cylinders in different formats that can all be used with the same type of key. This allows the user to have keyed-alike, and master-keyed systems that incorporate a wide variety of different types of lock, such as nightlatches, deadbolts and roller door locks. Typically,
padlocks can also be included, although these rarely have removable cylinders.
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