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 6240-01-355-4425
NSN 5930-00-542-3901
NSN 6645-00-641-3202
NSN 6685-01-268-0613
NSN 6685-00-153-0266
NSN 5990-01-463-2279
NSN 5960-01-469-8421
NSN 6650-01-568-0299
NSN 6320-01-527-0211
NSN 6620-01-016-8264
NSN 5920-01-241-7666
NSN 6620-01-186-4374