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:
“‘The key is in the window, the key is in the sunlight at the
window—I have the key—Get married Allen don’t take drugs—the key is in the bars, in the sunlight in the window.
Love,
your mother’”
—Allen Ginsberg (b. 1926)
“How, in one short century, has this ersatz sport so strangled the consciousness of the country in the grip of its flabby tentacles that the mention of women’s baseball gets no reaction other than blank amazement?”
—Darlene Mehrer, As quoted in Women in Baseball. Ch. 6, by Gai Ingham Berlage (1994)