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 5895-01-602-9583
NSN 4140-00-753-6888
NSN 5996-00-651-1656
NSN 5895-01-397-8828
NSN 6130-01-089-9052
NSN 6620-00-122-8136
NSN 5855-00-256-5562
NSN 5996-01-062-4354
NSN 6645-01-224-8973
NSN 5930-00-924-2232
NSN 6145-00-097-9437
NSN 6110-00-927-5436