thanks for replyingI have tapped holes into maybe... 20 or 30 FG rockets? Maybe more? So far, none of the holes have failed.
To be fair, we are mostly taking about nylon shear pins here. Not a lot of stress on the threads.
Generally, if I am going to need to put a metal screw into a rocket, I use a PEM nut.
good point about them being shear pins