5310-01-234-2599 (2DA758)
NSN 5310-01-234-2599 (NIIN 01-234-2599) is a lock washer in Federal Supply Class 5310, Nuts And Washers — a washer, usually round, with a centrally-located hole. Manufacturer part number 2DA758 (Oshkosh Defense LLC, CAGE 75Q65); also referenced as TS-10013 (Satair A/S); R0172736, R0172736-0300 (Denel Vehicle Systems).
NIIN assigned June 1986; DEMIL A (none required); unit of issue EA (each), $0.82 gov standard price; ships at 0.02 lb / 0.0014 cu ft.