ZG, that link still doesn't answer the question "what size is the fastener"? It opens up the original thread showing how one person made a 3/16" hole for one type of fastener, but I think he is asking about a different type of fastener, the "2" pin with a round safety bail".
Actually, I'd like to know that too. I'm guessing that he drilled a 3/8" hole, but I'm not positive. 3/8" actually sounds a bit large if you ask me?!?
MrFurious, what size hole was that??