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 5925-01-222-6183
NSN 6135-01-324-7718
NSN 6620-01-007-4249
NSN 5920-01-649-9181
NSN 6105-00-959-5468
NSN 6220-00-187-8569
NSN 6645-01-206-4888
NSN 5910-01-581-1270
NSN 6645-01-611-9391
NSN 6685-01-399-8584
NSN 6240-01-524-2381
NSN 5998-01-532-6944