score:11
Unlikely.
The final decision whether an item is allowed rests with the staff on the ground and any pre-approval would overrule this policy. A pre-approval would also require the item to be inspected and than "sealed" so it cannot be modified or tampered with between the pre-approval and the actual flight.
I travel with two items that often get flagged: a measurement microphone and (strangely) a Rubik's Cube. I have repeatedly asked TSA officers on how best to handle this, but have got no coherent replies. TSA behavior is inconsistent: you take them out: you get yelled at. You don't take them out: you get yelled at. Same of telling them up front: sometimes the appreciated it and sometimes they get annoyed and you get yelled at.