I had my CZ model 527 in 223 shortened and threaded for a suppressor.
I had to have the barrel shortened to a point where the barrel diameter was large enough to make the "major" diameter for the thread specs for my can (in this case .5 X 28" which is standard for 223/556 suppressors in the U.S.)
For a 30 caliber can standard thread pitch is 5/8X24" and on the CZ 527 carbine you'd have to shorten the barrel to below 16 inches to get to a point where the barrel diameter is thick enough to make major for that diameter.
That said, some suppressor manufacturers make an adapter that will allow for a 5/8X24 threaded can to be used on a barrel threaded with .5X28" threads (I have one and use it quite often).
Reference the CZ 527 in 7.62X39 and .5X28 threads, the question will be, is the "barrel wall" going to be thick enough at a legal barrel length to be safe reference the muzzle pressures with .5X28 threads.
.5X28" threads don't leave a whole lot of meat between "minor diameter" and the inside of the barrel on a 30 caliber tube.
5/8x24 will be a no go at a legal length so .5X28 is what you will be stuck with (unless you use a custom thread pitch and a custom thread adapter to use with your 5/8X24 can.
Here's a pic of my CZ carbine with suppressor attached. I had gemtech shorten and thread the barrel and a local gunsmith re attached the front sight.