I have found the rod's at Home Depot & Ace Hardware....the rod's at Home Depot is not where you think they would be, I can't remember where but do remember that I thought it was strange where they put them. I can go right now and walk right up to them.
Thier seem's to be alot of member's having trouble with this...Here in Tucson we have cal-fastner,State Industrial supply,airhardware Inc, and several other's that I can't think of thier names. But...they have every bolt,nut,stud,threads,washer's, that you can think of..
Their has got to be a place near where you live that has the same thing. Look in the phone book, Hardware, fastners, ect...
