Heli-Coil

HELI-COIL
INSTALLATION

CAUTION: USE PROTECTIVE EYE GLASSES AT ALL TIMES.





The following assembly information is used to assemble the Heli-Coil(r) inserts into aluminum components. Steel components can also be Heli-Coiled if there is enough material thickness.

DRILLING HOLE

NOTICE: The drilling depths are maximum and should not be increased.

Drill out the damaged threads using the drill specified in the table to a sufficient depth specified in the table.





TAPPING HOLE M6-M12

Select proper tap specified in table and tap the hole to a sufficient depth that will accommodate the insert required.
Clean counterbore, walls, and seat. Engage pilot threads and rotate tap until depth collar bottoms out. Remove tap and clear chips from hole.
After tap has been removed use compressed air to blow chips out of hole.





INSERTING HELI-COIL(r) M6

Remove mandrel from pre-winder, and place insert onto threaded end of mandrel Place mandrel in pre-winder threaded end down and turn into pre-winder two turns. Position squarely over hole and rotate mandrel clockwise until upper coil is 1/4 - 1/2 turn below top surface.





M8-M12

Select the proper size Heli-Coil(r) 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.





HELI-COIL(r) TANG REMOVAL

To remove the tang used for installation, place the square end of a punch on the tang and strike the punch sharply.
Use compressed air to blow chips out of hole.