If I had an american strat, I'd put the same part in it. So neither !
I have never tried to jam an M5 into a 10-32 but I understand it would be a snug/force fit. A 10-32 is a sloppy fit in a m5x08 but it goes.
Get one that's spec'd 10-32.
M5x08 is .1968" major and 10-32 is .190" major. They are not the same.
Anyone out there tapped a MIA 10-32 to M5x08 ?