I'm having a blond moment!

Want to attach a piece of M10 threaded rod between two pieces of timber.
One end I shall simply drill a hole right through and put washer/nut on
the end. But the other end needs to be secure without making a hole
right through (for aesthetic reasons). Damned if I can think of anything
suitable! I guess somewhere there might be a thing with a flange that
would screw onto the threaded rod and allow four screws into the wood?
Or a simple strip steel thing.

I do want a ready made thing for now. Not set up for backing metal at
the moment.

Any suggestions?

--
Rod