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 6320-01-225-0178
NSN 2925-01-279-1558
NSN 5990-00-401-6793
NSN 6130-00-475-9286
NSN 5998-01-129-2993
NSN 5905-01-261-2199
NSN 5960-00-914-7925
NSN 6650-01-633-9147
NSN 6685-01-160-5016
NSN 5855-00-797-8217
NSN 5999-00-542-0541
NSN 6620-01-039-1105