Rustfri mutter til tenningslås type FX/XL.
If you don’t like the standard ring nut that comes with your round type ignition switch, here’s your quality alternative. Hex style flange nuts which are CNC machined from stainless steel. Now you can tighten your switch down with a spanner so it won’t shake loose after a few miles down the road. A drop of thread locker doesn’t hurt though.