Lock-cylinder key

In a lock-cylinder key having a key shank with bit steps protruding on wide sides of its key shank for positioning of lock-cylinder tumblers, the improvement wherein a plurality of openings are arranged one behind the other and the bit steps lie on edges of the openings which openings extend through a thickness of the key.

In a lock-cylinder key having a key shank with bit steps protruding on wide sides of its key shank for positioning of lock-cylinder tumblers, the improvement wherein

• the bit steps lie on edges of an opening which opening extends through a thickness of the key,
• the key shank is of fork-shaped development and there are two sections of fork tines lying on both sides of the opening, said two sections are arranged on opposite sides of the center plane of the wide side, and
• arms, wherein the opening is formed by said arms which connect the fork tines and are of smaller thickness than said fork tines.

In a lock-cylinder key having a key shank with bit steps protruding on wide sides of its key shank for positioning of lock-cylinder tumblers, the improvement wherein

• the bit steps lie on edges of an opening which opening extends through a thickness of the key,
• the key shank is of fork-shaped development and there are two sections of fork tines lying on both sides of the opening, said two sections are arranged on opposite sides of the center plane of the wide side, and
• an outer narrow edge of the fork tines is also provided with bit steps.