5310-01-024-7556 (GN10AP4)
NSN 5310-01-024-7556 (NIIN 01-024-7556) is an extended washer self-locking nut in Federal Supply Class 5310, Nuts And Washers — a nut having 12 drive points, 24 sides, and an integral washer which extends beyond the points or periphery. Manufacturer part number GN10AP4 (Northrop Grumman Systems Corporation, CAGE 26512); also referenced as NAS1758L4 (National Aerospace Standards); H96-4 (Satair A/S); VN406A048 (Howmet Global Fastening Systems Inc); RM12LH6681-048, RMLH22-4 (Harvard Industries Inc).
Key specs: 45 rockwell c nominal hardness; full characteristics table below. NIIN assigned July 1976; DEMIL A (none required); unit of issue EA (each), $2.79 gov standard price; ships at 0.001 lb / 0.0001 cu ft. Supersedes 5310-00-991-0283 (1991), 5310-01-041-9650 (1991).