I have what I think is a GoldenGate style keg. It's got a bunghole, a tapped hole on top and another near the base.
I want to mount a electric hot water heater element in the base hole.
The base hole is 1.5" in diameter and the thread is 2" and ~.07" between threads.
Optimally, I'd get a reducer bushing, but I can't even find a thread size that matches these dimensions.