A nut having one convex, spherical bearing surface and 6 flat sides. Items may have a removable collar. An integral feature is incorporated for locking on the threads of a mating member. See also nut (1), self-locking, cone seat, hexagon.
Classification: Nuts of iron or steel
NSN 4140-00-155-8012
NSN 5930-00-732-1303
NSN 7035-01-422-4642
NSN 5990-00-652-6578
NSN 5945-00-322-9454
NSN 5835-01-647-6426
NSN 5999-01-095-6843
NSN 5996-00-096-2604
NSN 7035-00-088-7355
NSN 5996-00-150-2289
NSN 6650-00-500-6455
NSN 6620-01-520-4186