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 5990-01-359-8334
NSN 2925-01-415-2140
NSN 5945-01-107-7655
NSN 5975-00-175-6696
NSN 6130-00-480-9066
NSN 6685-01-437-6292
NSN 5835-01-486-0545
NSN 6105-01-228-6594
NSN 5965-01-030-4222
NSN 6610-00-740-7103
NSN 6320-00-506-2314
NSN 5990-00-501-4994