5310-01-059-6007 (NAS1727C6E)
NSN 5310-01-059-6007 (NIIN 01-059-6007) is a single ball sea self-locking nut in Federal Supply Class 5310, Nuts And Washers — a nut having one convex, spherical bearing surface, with 12 drive points, 24 sides. Manufacturer part number NAS1727C6E (National Aerospace Standards, CAGE 80205).
NIIN assigned April 1978; DEMIL A (none required); unit of issue EA (each), $4.84 gov standard price.