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 6620-01-649-7511
NSN 5996-01-470-6975
NSN 6650-01-227-0439
NSN 5998-01-081-4923
NSN 5945-01-141-0338
NSN 6110-01-633-9660
NSN 5915-01-220-8184
NSN 5835-01-286-6499
NSN 5998-00-526-3239
NSN 5975-01-052-5059
NSN 6610-00-551-3610
NSN 5996-01-281-7336