Burner threads

Be Carfull here I know the Asian burners are slightly smaller in there thread diamitor to the English & Swedish burners. They appear to have the same threads per inch but the diamitor is smaller. When you screw them together on the final tightening it jumps the thread.
It does not strip the thread for you can tighted the original burner ok after. I would say the other way around it would be tight to screw in, although I have not tried this
Albert