In article , news.ind.net.spamtrap1
@yunx.com says...
Anyone know of a source of really thin / low thrust belleville washers?
...I'd like to find some about the same strength as a few wave washers...
But they don't seem to exist.


Check with these folks:

http://www.schnorr.com/

They offer bellevilles with slots cut into the ID to reduce spring rate.
I've only noticed them in their literature when purchasing other disc
springs from them, so I'm not sure if they're a standard product or not.

I have used their serrated bellevilles, which are sized to fit under the
heads of socket cap screws and are thinner than typical, so might be
worth a look as well.

Ned Simmons