Removing rust from nuts and bolts

JoeSBP said
I have a buddy that runs a small business prepping race bikes. He has a funny quirk about screw type hose clamps.
Before installing/reinstalling one, he always hits it with rouge and a buffing wheel to shine it up..

Wow. That's even more anal than me..... If I see a rusty/ ugly clamp I will usually just replace it with a new one.