Tiny brass washers on FSA chainset - why?

[Globalti]

In between the spider and the outer ring. Are they there to prevent the ring from sticking to the spider or for spacing?

 

[RedBike]

No idea but as brass is relatively expensive / heavy there must be a good reason to use it over say steel or aluminium.

It's normally only used for low friction applications.

 

[kyuss]

I wondered what they were for. I had some on the FSA Vero that came on my fixed and can't think what use they serve. They are certainly too thin to be of any use as spacers.

 

[spandex]

They are to stop squeaking and allows you to get a bit more torque on the bolts.