5310-01-429-5053 (600115)
NSN 5310-01-429-5053 (NIIN 01-429-5053) 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 600115; also referenced as 600115 65MM POS6 (Almhults Bruk Ab).
NIIN assigned April 1996; DEMIL A (none required); unit of issue EA (each), $6.66 gov standard price.