Flat key and associated cylinder lock

Abstract

Flat key (1) for a cylinder lock (2), comprising a coded key flat (7), wherein at least three control grooves extending longitudinally along the key flat (1) are formed on the key flat (7), the control grooves each connecting several control points, wherein at least one control groove is configured as a deep control groove (8) and at least two control grooves as shallow control grooves (9, 9'), wherein the shallow control grooves (9, 9') are substantially the same depth and run substantially parallel to each other, and wherein at least one additional control cam (10) is provided on the key flat (7), which is arranged at least in the region of the key tip (3) next to a shallow control groove (9, 9') or next to a deep control groove (8), and which is configured as a groove that is semi-open towards the back (5) or the face (6) of the key, which is separated from the nearest control groove (8, 9) by a material web (11).9') is separated.,