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 5920-01-267-2795
NSN 5945-01-161-6202
NSN 5855-01-398-3181
NSN 6650-01-574-4934
NSN 5945-01-481-4126
NSN 5999-01-027-0177
NSN 5905-01-381-2552
NSN 7035-01-283-2536
NSN 5950-01-520-4445
NSN 6220-01-614-7215
NSN 6650-00-879-5834
NSN 4140-00-128-8072