VHT Brake Caliper, Drum, and Rotor Paints SP739 I used this on mine and it is some tough stuff. The ball jointHa threads aren't deep like a regulator bolt thread. As long as they tighten up there are fine.
I have used vht before to blackout some lenses, maybe 15 years ago and it did not last very long. How have been your results so far and how long ago dd you use it?