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 5945-01-556-3304
NSN 4140-01-474-1286
NSN 6610-00-374-1563
NSN 5965-01-468-0984
NSN 5945-01-422-1684
NSN 5915-01-320-6858
NSN 5910-00-186-8680
NSN 6150-00-972-5229
NSN 5925-01-353-2766
NSN 4140-01-510-2729
NSN 5975-01-613-9762
NSN 4140-01-411-4764