The 5.56 and 7.62x51 Galil's have different threads from each other. I believe they are both different from the 7.62x39 milled AK. I believe the Valmet may have similar threads to the 7.62x39 AK. The Valmet armorer's manual has the torque valve but I'm not sure if it has the thread size. Also it's mainly for the 7.62x39 Valmet's although it does cover both milled stamped receivers. I think the 7.62x39 and 5.56 use the same trunnion in the Valmet. It may have a section with thread sizes. I don't read Finnish and I have only figured out the info I needed from it.