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 5990-00-754-5253
NSN 6645-00-171-9639
NSN 6620-01-078-6372
NSN 6150-01-423-8620
NSN 6150-01-514-3422
NSN 5920-01-407-9623
NSN 6145-01-655-6449
NSN 6620-01-627-0478
NSN 5999-01-619-3227
NSN 6145-00-267-5309
NSN 4140-00-466-9268
NSN 6645-01-268-7265