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 5920-01-064-6281
NSN 5910-01-285-0390
NSN 6150-01-278-3448
NSN 5985-01-660-8244
NSN 5990-01-238-1975
NSN 6645-01-114-6802
NSN 5920-01-263-0310
NSN 6135-01-017-3001
NSN 7035-00-337-8745
NSN 5945-01-444-6440
NSN 5960-01-201-5804
NSN 5975-00-769-5564