Ron Burgundy said:No as in, not wheel studs, just the torx bolt that holds the disc to the hub. These are not 'really' necessary as the wheel bolts determine more flush contact with the hub
Another option - if the metal is soft enought to have been stripped, then it *might* be soft enough to hammer in a torx bit of the next size up...
Also, most automotive shops will sell special particulate grease to help 'grip' nuts and bolts. Kinda like WD40 (I assume you've tried that already?)