Abstract: An aligner for use with threaded self tapping insert, a drive bolt, and a bushing, wherein said self tapping insert is driven into position in an accepting bore by said drive bolt passed through said bushing and through said self-tapping insert thread and fitted with said aligner, said aligner comprises a body, inscribed by a circle the diameter of which is slightly smaller than the diameter of said accepting bore; and an attachment means for attaching said aligner to said drive bolt, wherein said aligner aligns the central axis of said threaded self tapping insert with the central axis of said accepting bore when inserted therein.