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 5975-00-199-9563
NSN 6145-01-445-7167
NSN 5930-01-024-6337
NSN 5975-01-408-4599
NSN 5996-01-308-7987
NSN 5998-01-650-8492
NSN 5950-00-404-1395
NSN 6240-01-463-8276
NSN 5990-01-512-9129
NSN 5965-01-564-3579
NSN 6110-00-257-5199
NSN 6240-00-838-9030