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 5895-00-709-2617
NSN 5935-01-148-1114
NSN 6220-01-109-1014
NSN 5855-01-492-3497
NSN 5996-00-780-9098
NSN 5960-00-509-4549
NSN 6650-00-412-5988
NSN 4140-00-566-3896
NSN 6620-01-298-0991
NSN 5925-00-126-1489
NSN 6145-01-442-6965
NSN 6620-00-181-2605