My guess is a tentpole crown fitting. Somewhat similar to the one discussed here: https://outdoors.stackexchange.com/questions/16155/what-is-this-tent-piece-ca

My guess is a tentpole crown fitting. Somewhat similar to the one discussed here: https://outdoors.stackexchange.com/questions/16155/what-is-this-tent-piece-called https://outdoors.stackexchange.com/questions/16155/what-is-t... Perhaps only used for the grandest of tents, otherwise there'd be a lot more of them.