Truss Rod Question: Epiphone Acoustic Bass

Can you take a picture? Most epiphone guitars have a socket at the Headstock that requires an Allen wrench. If the El capitan is a Gibson style rod, it would require a thin wall 5/16" (I think) socket. If it's Gibson style, it is possible for the nut to be unscrewed all the way, which would leave just a threaded rod sticking out.

 

I'm no expert on epiphone truss rods, but it looks like it extends out about the right length, so it likely nothing has broken off. I would expect to see flats on the inside of the hole to accept an Allen wrench, but it looks like it is rounded out maybe? In the first picture in about the 7-8 o'clock area of the nut, it looks like there may be a flat side left? Have you tried an Allen wrench?

If it is rounded out, you could try something like this: http://www.stewmac.com/How-To/Onlin...russ_rod_nut_Good_news_an_easy_solution_.html

 

This may help too:

Nearly stripped truss rod nut... - The Acoustic Guitar Forum