[Vwdiesel] hardware question

[Shalyn Shourds]

Now that I have the TDI back together, I need to find a few bits and 
pieces to make sure it stays that way.  One is the kind of partially 
deformed nuts that hold the exhaust manifold on.  Due to wear and 
occasional loss of parts, I didn't have a full set.  I'm told that plain 
nuts will work loose and fall off and that lockwashers lose their temper 
and quit after a few heating cycles.  I asked the dealer about new 
locknuts and they wanted  $5/nut.  I'm not giving them $40 for that.  
That's twice what I paid for the head bolts.  I had thought about 
finding some brass nuts and deforming those some, but I can't even find 
those in metric at the hardware stores.  There's not really enough room 
to jam nut them either.  Any good ideas before I spend a lot of time 
re-inventing the wheel? 

-Shalyn