M8-M12
Select the proper size Heli-Coil insert from table. Use the installation tool listed in table and turn the insert clockwise into the hole until the upper coil is 1/4 - 1/2 turn below top surface.
Select the proper size Heli-Coil insert from table. Use the installation tool listed in table and turn the insert clockwise into the hole until the upper coil is 1/4 - 1/2 turn below top surface.