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 6240-01-010-2991
NSN 6145-01-515-1153
NSN 5925-01-215-1386
NSN 5945-00-959-0477
NSN 6610-01-357-5957
NSN 5985-01-647-9064
NSN 6610-00-021-2259
NSN 6150-00-661-0184
NSN 6620-00-115-2501
NSN 5855-01-332-3011
NSN 4140-01-430-2335
NSN 6650-01-255-2390