yup. thats really the only thing to look for but when you need to order parts for them but if you get the parts from them, theyll send you the right stuff...and if you ask nice, theyll send you a set of wrenches for free.It only crops up as an issue if you try to order an axle conversion kit. Make sure you order the right one.
If you have a question, just call Hadley. They are very helpful. They did change the thread used and they hooked me up with the new parts I needed to keep my old hubs relevant.
my rear from 2005 is still perfect as well as my other Hadleys. ill never buy another set of hubs