A nut having one convex, spherical bearing surface, with 12 drive points, 24 sides. Items may have a removable collar. An integral feature is incorporated for locking on the threads of a mating member.
NSN 5920-01-214-0451
NSN 6220-01-610-4662
NSN 5998-01-215-0979
NSN 5945-01-571-8903
NSN 5945-01-403-2800
NSN 5985-00-105-5027
NSN 2925-01-061-4012
NSN 6145-01-455-3550
NSN 6610-00-575-7933
NSN 5895-00-035-8813
NSN 4140-01-247-7758
NSN 7035-01-114-3134