Funnily enough, a few days ago, I did try to cut a M10 thread with a die. The workpiece was JUST under 10mm. With the die adjusted to a good quality M10 bolt, it caused the belts to slip. Then the job slipped in the chuck jaws. Eventually, I got enough threads cut to remove the job from the lathe, hold it in the vice and use a fairly large die holder. The thread was cut by slightly opening the split die, and backing off every quarter turn, to break the rather large curls of swarf. Once "roughed out", the die was reset and cleaned up by hand. As a lubricant, I used bacon fat, (too idle/tight to open the tin of Rocol STD) The nut, of the same quality as the bolt, was an easy fit, which made it ideal for the intended use.
Howard.