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 5895-00-955-5569
NSN 6620-00-572-7301
NSN 5990-00-165-9195
NSN 6145-01-539-3392
NSN 2925-01-136-2551
NSN 6130-01-555-8062
NSN 5950-00-317-8257
NSN 5835-01-281-7281
NSN 5895-01-332-3931
NSN 5990-01-054-3332
NSN 6240-01-098-6410
NSN 7035-01-216-4806