Well no hoarding, strictly speaking -- just need one.

Went to ride the Palo Alto recently and noticed the acorn nut on the rear NR brake was gone (to paraphrase the Brit Car folks "The parts falling off this bike are of the finest Italian quality" -- sheesh, this wouldn't have happened with Mafacs!), and, although the brake works fine for the moment, I guess I should replace it, lest I'm tempted to grip the center shaft with one of those miniture pairs of Vice Grips and be done with it.

OK, is there a nice little on-line small parts vendor, or do I have to cruise CL and eBay forever hoping for the best? Er, I guess it does not have to be brev-camp, if anyone knows the correct size and a place that sells acorn nots in lots of less than 1000.

Hmm, it occurs to me that, if I replace the entire brake set with something else (my favorite non-Mafac set-up has been Weinmann 500's but with Universal levers), then I could move the Campys over to my wife's newly-acquired Windsor (the Her Jewel topic finally has photos up) to make it fully Campy.