5120-01-349-0373 (FILE)
NSN 5120-01-349-0373 (NIIN 01-349-0373) is a counterbore cleaning tool in Federal Supply Class 5120, Hand Tools, Nonedged, Nonpowered. Manufacturer part number FILE; also referenced as FILE 686 (Progress Rail Locomotive Inc.).
NIIN assigned November 1991; DEMIL A (none required).