5340-00-414-9122 (NP11155PC5016)
NSN 5340-00-414-9122 (NIIN 00-414-9122) is a helical compression spring seat in Federal Supply Class 5340, Hardware, Commercial — a circular item, usually having a flat or grooved flange, boss(es), and/or counterbore, designed to accommodate the end of the spring. Manufacturer part number NP11155PC5016 (Cooper Cameron Corp Ajax-Superior, CAGE 55509); also referenced as P211586 (Sterling Engine Co Inc); NP11158PC6 (Cooper Cameron Corp Ajax-Superior).
NIIN assigned January 1961; DEMIL A (none required); unit of issue EA (each), $1.29 gov standard price.