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 6650-01-527-6918
NSN 5996-01-530-8504
NSN 5895-01-167-0404
NSN 5985-01-415-5785
NSN 5999-01-512-4807
NSN 2925-01-253-6006
NSN 6145-01-079-6834
NSN 5855-01-047-9267
NSN 5925-01-421-1119
NSN 6110-00-199-5451
NSN 5925-01-264-3230
NSN 6645-00-883-8086