Does anyone know where I could find a part for my umbrella.Its a southern Butterfly patio.The part I need is called a HUB,it goes at the top.Holds the arms in place.

Contact the manufacturer. Sometimes they actually give replacement parts away, if they've been getting repeated requests for the same part, for the same reasons. I've done it twice.

http://www.parpool-spa.com/Page/Back...Butterfly.html

Contact these guys for the manuf. Info.