In the WTE guide, it says very strongly:
Thread the bulkhead into the threaded hole until it is finger-tight. Do not use a penetrator nut in the back of the bulkhead.
Why is this?
For context, we are putting together a custom faceplate with custom threads, and we want to make sure we do it properly. If for some reason adding the nut increases the chance of a leak, I’d like to avoid that, but we feel like a nut would make it more secure.