5340-00-414-9123 (P2011)
NSN 5340-00-414-9123 (NIIN 00-414-9123) 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 P2011 (Sterling Engine Co Inc, CAGE 17572).
NIIN assigned January 1961; DEMIL A (none required); unit of issue EA (each), $3.20 gov standard price.