5315-00-059-0176 (590176)
NSN 5315-00-059-0176 (NIIN 00-059-0176) is a cotter pin in Federal Supply Class 5315, Nails, Machine Keys, And Pins — a half round, cylindrical, or flat piece of metal, bent to form a straight or crimped two-pronged device with an eye at one end. Manufacturer part number 590176 (Army Weapons Command Attn, CAGE 21450); also referenced as FF-P-386 (Federal Specifications Promulgated).
NIIN assigned January 1963; DEMIL A (none required); unit of issue HD (hundred), $90.58 gov standard price; ships at 0.42 lb / 0.0093 cu ft.