5340-01-042-2053 (634-8466-001)
NSN 5340-01-042-2053 (NIIN 01-042-2053) is a spring retainer in Federal Supply Class 5340, Hardware, Commercial. Manufacturer part number 634-8466-001 (Rockwell Collins, Inc., CAGE 13499); also referenced as 1143AS207 (Naval Air Systems Command Managed).
NIIN assigned June 1977; DEMIL A (none required); unit of issue EA (each), $16.68 gov standard price.