Keep in mind that on harder materials the percentage of thread is considerably less. In that material, the bolt would break before the threads would strip using 50% or less engagement.
I have thread milled 10-32 holes on steels... |
What threadmill you use? I haven't done it that small or that hard, but I know it can be done easily. I love the control of threadmilling as well.
'Rekd teh simpleton