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 5975-00-850-6809
NSN 5975-00-899-7952
NSN 5990-01-393-4808
NSN 5945-00-453-3121
NSN 6645-01-437-9017
NSN 5920-01-185-2222
NSN 6110-00-801-8032
NSN 2925-01-620-6812
NSN 5835-01-469-6706
NSN 5945-01-302-1528
NSN 4140-00-155-8012
NSN 6320-01-506-9439