Procedure

Drill out hole to be repaired.





Select the drill diameter and drilling depth from the thread insert tables.

Hole edges should not be countersunk. Only slight deburring is recommended.

Tap hole with correct tap for thread insert.





Select correct tap for particular material and hole size.

For example, select tap for M10 thread insert for M10 tapped hole.

Tap to correct depth (see table). Blow hole clean.

Select thread insert of correct length (see table).

Position thread insert in installation tool.





Insert should be positioned with tang pointing down.

Install thread insert.

Screw insert on mandrel until driving tang is fully engaged in slot. Screw insert into tapped hole. Top of insert must be 1/4 to 1/2 turn below top surface.


Break off tang.

Break off tang with tang breaker. Do not use installation tool for this purpose.

Remove tang and blow hole clean.

Use bolt to check that thread entry is smooth and that insert is correctly installed.