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 6645-01-442-0899
NSN 5996-00-644-4662
NSN 6105-01-257-3063
NSN 2925-01-157-9204
NSN 5855-01-479-1277
NSN 6110-01-445-5890
NSN 6105-00-836-1151
NSN 5960-01-558-7787
NSN 5998-01-062-1151
NSN 6240-00-689-8504
NSN 6320-01-198-4024
NSN 6220-01-376-4372