5120-01-294-0319 (4124573)
NSN 5120-01-294-0319 (NIIN 01-294-0319) is a valve seat extractor base in Federal Supply Class 5120, Hand Tools, Nonedged, Nonpowered. Manufacturer part number 4124573 (Oshkosh Defense LLC, CAGE 75Q65); also referenced as 6V4197 (Caterpillar Inc).
NIIN assigned February 1989; DEMIL A (none required); unit of issue EA (each), $72.75 gov standard price.