K

See Strike.

A matrix (graphic) display of all possible bittings for change keys and master keys as related to the top master key.

The total possible number of different keys available for a given type of tumbler mechanism. In master key work, the number of different Change Keys available in a given master key system.

Any method or procedure which limits unauthorized acquisition of a key and/or controls distribution of authorized keys. A systematic organization of keys and key records.

The cross-sectional shape or configuration applied lengthwise to a key blade that may restrict its insertion into the lock mechanism through the keyway. Each key section is assigned a designation or code by the manufacturer. A key section is usually shown as a cross section viewed from the bow towards the tip of the key.

The cross-section of a key blade as viewed from bow to tip.

The side of a door that is usually keyed. In the case of a nonkeyed function or one where both sides are keyed, it is the outside of an interior door.

A symbol/designation that is used for a key combination using the standard key coding system.

(KA) - A group of locks all operated by the same Change Key. (Not to be confused with master keying)

(KD) – A group of locks each operated by a different Change Key.

A term used in the hardware industry which refers to the arrangement of the locks and keys in a building or buildings into groups in order to limit the areas to which various personnel will be given access.

A detailed specification of a keying system listing how all of the cylinders are to be keyed.

A chart that visually shows the levels and layout of a key system.

A set of buttons with numbers, letters or symbols used to manage access with a PIN (personal identification number) or pass code.

The broach or aperture in a cylinder plug that is formed to match that of the key blank section being used.

A round handle on a door, generally used to actuate a lock or latch but may be used simply as a pull or dummy trim.