Brake Line Distribution block port sizes are different
You have to be even more careful when dealing with "the others" (GM, Ford, etc) Some of those nuts over the years, are not even standard inverted flare. Some of them are the same ID but with different threads (pitch, or TPI)
"Back in the days" when we ran hydraulic operated trailer controllers, you could buy different tees and bushings to deal with these fittings.
You have to be even more careful when dealing with "the others" (GM, Ford, etc) Some of those nuts over the years, are not even standard inverted flare. Some of them are the same ID but with different threads (pitch, or TPI)
"Back in the days" when we ran hydraulic operated trailer controllers, you could buy different tees and bushings to deal with these fittings.