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 4140-00-232-9859
NSN 5925-00-858-7151
NSN 5998-00-212-4406
NSN 6650-01-370-5265
NSN 5985-01-480-6627
NSN 5960-01-407-1350
NSN 5920-00-094-0655
NSN 5945-01-020-2703
NSN 5920-01-300-1510
NSN 6645-01-457-8642
NSN 6650-01-495-8031
NSN 6610-01-202-0371