The non drive cone seems to be part of the 6001 bearing but could just be seized onto it The bearing is a one seal type, being open on the inside for the Grease Guard to work. The bearing is shot though.I don't think I have, but he it's much like any other cup cone hub except the outer cone is a sleeve iirc to prelaod the bearing.
Oh and the Allen key is on the inside, not the outside for the freehub body.