Plumbers use pipe dope; electricians do not.
Part of the reason is that we need more than continuity; we need a ground path. And, part of the reason is that our threads were never intended to be water or air tight. (Notice how many fittings have straight, and not tapered, threads?)
If you want to ease the assembly, might I suggest either a listed material, such as "Noalox" and "Penetrox," or even anti-seize compound? These will also help prevent the pieces from rusting together.
Otherwise, when completed the cut threads ought to be coated with one of those spray-on zinc compounds. Or wrapped in pipe wrap tape. Or both.
