Use of a harder allow would be great, but until that’s been confirmed, I’m an ‘err on the side of caution’ type of guy…
The only ‘benefit’ to using aluminum threads repeatedly is convenience. The hassle of even a 1% chance of stripping an aluminum terminal thread makes that convenience not worth it (at least to me, who has now had to deal with retapping 3 threads…).
In terms of force being applied to the aluminum threads, absolutely.
In terms of stainless-on-aluminum galling, absolutely not. Once you Loctite in a stainless grubscrew, your aluminum thread will be safe until you apply so much force that you sheer it off.
Each and every time you unthread a stainless bolt from an aluminum thread, you will remove some aluminum and ‘wear’ (degrade) the thread.
As far as torque, I believe we are in agreement, but the primary reason I am recommending the use of secured grubscrews is ‘better’ than direct use of the aluminum thread with stainless bolts is thread wear…
Well first, there is no ‘spec’.
And second, once you find the appropriate curve showing contact resistance versus psi for a copper-on-aluminum connection, you will see that there is a point of diminishing returns above which you can ‘go nuts’ if you want, but you’ll likely be taking additional risk (of sheering threads) for little meaningful benefit…
