On installation the bottom internal threads of the insert are cold rolled to expand the mating external threads into the base material locking the insert in place.
10 x TIME-SERT® M6 x 1.0 x 9.4mm Thread Repair Inserts - M6 Helicoil Replacement
10 x TIME-SERT® M6 x 1.0 x 12mm Thread Repair Inserts - M6 Helicoil Replacement
TIME SERT® Würth M6 x 1MM Thread Repair System Kit - M6 - 10 x Inserts 06616
10 x Wurth M6 x 1.00 x 12mm TIME SERT® INSERTS 12mm length for - Thread Repair
10 x Recoil helicoil type wire inserts metric Coarse M6 x 1.0 x 1.5D 25063