| key types | Schlüsselarten |
| mortice key/single-bit key | Bartschlüssel |
| cylinder key | Zylinderschlüssel |
| safe key/double-bit key | Doppelbartschlüssel |
| dimple key | Bohrmuldenschlüssel |
| cruciform key/four-sided key | Kreuzbartschlüssel |
| laser track key | Bahnenschlüssel |
| tubular key | Tubulartschlüssel |