THREADED INSERTS AND HELICOILS - continued
Center punch broken stud or screw.
Drill three quarters way deep into broken stud or screw using an appropriate size drill bit.
Using a screw extractor, remove broken stud or screw.
Remove studs or screws that have not broken flush to surface as follows:
Clamp broken stud or screw using vise grip pliers.
Back out broken stud or screw.
Repair threads that are damaged and cannot be restored by installing a helical coil insert. The following
gives standard procedures for installation of a helical insert and removal of a previously installed
Install Helicoil Inserts.
All sizes for tools and helicoils depend on original bolt size. Refer to