Key Blank

A key blank (sometimes spelled keyblank) is a key that has not been cut to a specific bitting. The blank has a specific cross-sectional profile to match the keyway in a corresponding lock cylinder. Key blanks can be stamped with a manufacturer name, end-user logo or with a phrase, the most commonly seen being 'Do not duplicate'. Blanks are typically stocked by locksmiths for duplicating keys. The profile of the key bow, or the large, flat end, often references an individual manufacturer.


Despite common belief, keys stamped with "Do not duplicate" or "It is unlawful to duplicate this key" are, with few exceptions, perfectly legal to duplicate. Some key blank manufacturers strictly restrict the sale of their own blanks. Some blanks are made only in small volumes and are not widely available.

ALOA, an internationally recognized association for locksmiths, also considers such stamps an empty threat.

Famous quotes containing the words key and/or blank:

    “There are two kinds of timidity—timidity of mind, and timidity of the nerves; physical timidity, and moral timidity. Each is independent of the other. The body may be frightened and quake while the mind remains calm and bold, and vice versë. This is the key to many eccentricities of conduct. When both kinds meet in the same man he will be good for nothing all his life.”
    —Honoré De Balzac (1799–1850)

    “There is hardly any contact more depressing to a young ardent creature than that of a mind in which years full of knowledge seem to have issued in a blank absence of interest or sympathy.”
    —George Eliot [Mary Ann (or Marian)