5310-01-454-3597 (2)
NSN 5310-01-454-3597 (NIIN 01-454-3597) is a hexagon plain nut in Federal Supply Class 5310, Nuts And Washers — a nut, flat on top and bottom having 6 flat sides. Manufacturer part number 2; also referenced as 2 915 039 020 (Robert Bosch LLC).
NIIN assigned March 1998; DEMIL A (none required); unit of issue EA (each), $0.87 gov standard price.