Our thread repair files help breathe life back into bolts, screws or fittings that have been damaged due to cross-threading or corrosion. Made of high carbon steel. The repair files offer eight different thread pitches. In addition, the thread repair files can also be used as a screw pitch gage.
11 T.P.I (threads per inch)
Contains four files covering eight thread pitches
Also can be used to restore rusted or corroded fasteners