A nut having 1 convex, spherical bearing surface and 6 flat sides. Items may have a removable collar. See also nut (1), plain, cone seat, hexagon.
Classification: Nuts of iron or steel
NSN 6620-01-659-8887
NSN 6650-01-525-7370
NSN 5935-01-298-6625
NSN 6145-01-265-7159
NSN 6145-01-626-1989
NSN 5990-00-348-1423
NSN 5975-01-351-6097
NSN 4140-01-139-4877
NSN 5998-01-419-5971
NSN 7035-01-406-6510
NSN 6130-00-525-9975
NSN 6110-00-196-5346