Keeper See Strike.
Key The device which activates the lock mechanism or cylinder.
Key Bit Generally a cut in a key. In lever locks, it means the projecting part of a key which allows it to activate the locking mechanism
Key Blank An uncut key.
Key Changes The number of differs available under a given system.
Key Code A record of key bitting.
Key Hole Lock A small lock mechanism designed to block the keyhole of a lever lock.
Key In Knob (or lever) Various locking and latching functions operated by a knob or lever complete with a cylinder or turnknob, incorporated within the knob or lever.
Key Latching Indicates the operation of the key – withdraws the bolt.
Key Locking Indicates that operation of the key lock or unlock the furniture and/or the bolt of the lock.
Key Plate See Escutcheon.
Key Profile The shape of the cross-section of the key which matches the broach.
Keyed Alike Indicates identical keying for two or more locks.
Keyed To Differ A different key is needed to activate each lock.
Keying Schedule A complete listing and explanation of all keys and keying requirements.
Keyway See Broach.
Kick Plate A protective plate applied on the lower rail of a door to protect against the door being damaged.
Knob A projecting part, usually rounded, forming the handle for a lock.
Knob Shank The projecting stem of a knob into which the spindle is fastened.
Knuckle The enlarged part of a hinge into which the pin is inserted.