5340-00-470-0997 (A5227066)
NSN 5340-00-470-0997 (NIIN 00-470-0997) is a vent plug in Federal Supply Class 5340, Hardware, Commercial — a ported item with or without external threads. Manufacturer part number A5227066 (Striegel Supply, Inc., CAGE 57217); also referenced as 5227066 (Rolls-Royce Solutions America Inc).
NIIN assigned January 1963; DEMIL A (none required); unit of issue EA (each), $3.88 gov standard price; export Schedule B 8421.99.0080; ships at 0.065 lb / 0.0003 cu ft.