On Fri, 21 Oct 2011 12:56:45 GMT, Doug White
wrote:
snip
They are cut
like bevel gears, but flat, and with a triangular tooth geometry. Haven't
a clue what they are called. I tried "indexing washer", but that didn't do
it.
snip

These are called Hirth couplings or joints.
http://en.wikipedia.org/wiki/Hirth_joint

At one time widely used in built up crankshafts for high
performance engines (motorcycles) and may still be.

Among many other sites see
http://www.amcprecision.com/v-tooth.htm
http://www.voithturbo.com/hirth-coupling.htm
http://www.eng-tips.com/viewthread.cfm?qid=88618

no prices but looks like a spicy meatball...


--
Unka' George

"Gold is the money of kings,
silver is the money of gentlemen,
barter is the money of peasants,
but debt is the money of slaves"

-Norm Franz, "Money and Wealth in the New Millenium"