Last time I went to TNT, they did not have that fitting either, but said they could get it from Earl's pretty quickly. Might be worth giving them a ring.
Actually hey Mo, I have an extra one laying here as I had bought the wrong one. What exactly do you need? Male -6AN, Male or Female 12mm 1.5???
I have one of these laying around at home
http://store.summitracing.com/partde...5&autoview=sku