A nut having 12 drive points and 24 sides. The bearing surface may be washer faced. An integral locking feature is incorporated in the design of the head or in the threads.
NSN 5996-00-067-7624
NSN 5915-01-054-3109
NSN 5990-01-386-3040
NSN 6650-00-535-6923
NSN 6145-01-094-4449
NSN 6150-01-009-9050
NSN 6240-01-221-1378
NSN 5975-01-102-0395
NSN 2925-01-253-6006
NSN 5895-01-005-1665
NSN 5855-00-256-5562
NSN 5925-01-339-3208