Cross-threaded wheel hub...
 

I've got a single thread on my left rear wheel hub that is damaged. Bolt is out, so that isn't the issue. It did come loose. I think the damage to the threads on the hub is minor. Is there a thread tap I can use for this with the hub and rotor still on the axle (no disassembly there), and if so, what are the specs of the thread tap to do this properly?

Update - the thread is a 14mm x 1.5. Luckily, I found a thread tap at a local shop, and carefully worked it through the cross-threaded hole in the wheel hub. I would work the tap in a bit, back it out, clean the hole, oil it, clean it out, screw in a lug bolt by hand, see how far I could go in, and re-inserted the thread tap. Repeated this a few times until everything was OK again and the tap went all the way through.

Dodged a bullet...