12 M6 1.0 serrated flange head locking nut for various uses on Mercedes, BMW, Porsche and others.
These 6mm 1.0 thread nuts have a flange head with a serrated base for locking and are used in many different places on European cars like Mercedes, BMW, Porsche, VW, Audi and more.
These are used on the Mercedes models for things like air cleaner rubber mounts, transmission, brakes, pedals, suspension, fuel, electrical, etc.