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.
Sealey Flat Washer M8 x 17mm Form A Zinc DIN 125 Pack of 100 - FWA817
5 x Time-Sert M8 x 1.25 x 16.2mm Thread Repair Inserts - M8 Helicoil Replacement
20 x TIME-SERT® M8 x 1.25 x 16.2mm Thread Repair Inserts M8 Helicoil Replacement
5x TIME-SERT® M8 x 1.25 x 20mm Thread Repair Inserts - M8 Helicoil Replacement
25x TIME-SERT M8 x 1.25 x 16.2mm Thread Repair Inserts - M8 Helicoil Replacement
Time-Sert® M8 x 1.25 x 11.7mm Thread Repair Insert - M8 Helicoil Replacement
