Missing a couple of screws for mounting adapters and calipers. The frame
of the bike is aluminum.

Do these have to be from some sort of space-age special material? The
ones that came with the adapters (unfortunately only one pair each) are
magnetic, so it's steel.

Most of my M6 screws are Cadmium plated steel like they are used on
aircraft. Will that do?

I guess brass isn't sturdy enough. Anything else is locally unobtanium
in metric size.

--
Regards, Joerg

http://www.analogconsultants.com/