Stefano, Alfa Parts (http://www.alfapartscatalog.com/) has a 'Pinion Nut' listed under "Differential" which might be what you are looking for. Here's their listing for it:
* PINION NUT 115 72-95* Code: *60506878* Price: *$41.50* Bruce > Date: Wed, 10 Nov 2010 08:22:57 -0800 > From: Stefano Iachella <[email protected]> > Subject: [alfa] Trunion Nut availability > > Cats: > > Is the rear trunion castleated nut available? I checked CL and IAP online > and don't find it. Is it equivalent to something I can find at a local or > online > fastener outlet? What are dimensions (and threads)? > > Oh - for 1974 GTV. > > Thanks, > Stefano > Concord, CA -- to be removed from alfa, see http://www.digest.net/bin/digest-subs.cgi or email "unsubscribe alfa" to [email protected]
