Ah yes the RH is needed as stated above to tend to tighten (at least not loosen) from normal rotation engine / prop torque...
Sheesh and DOH!-- I knew that
Forgot that the pop/bang and loose the hardware from backfire was wrong rotation instant torque...
MM I am going to try my hand at helicoil fixing one of the two that I buggered by too much torque
Also thought trying a trick my dad did decades ago fixing a stripped hole on and aluminum car engine head. Cleaned it good, then again, then flooded with MEK, blew out and packed hole with J&B weld
full two day set then tap and drill... The bolt for the alternator only was 7/16 with 14Lbs torque call out in the Chiltons book
Of course this method for a rotating assy demands the drill and tap process needs to be dead center accurate
Any way guys thanks for the responses. They helped to snap back into the grey matter, all the things, I USED to understand fully as a mechanic
This getting old and the more and more frequent senior moments is a bit disconcerting
MotorMan thank you so much for the offer, I currently have 7 of the typical spinner nuts. I bugger more than the two I just stripped, I will PM you for details and compensation