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 4140-01-325-2955
NSN 5910-00-257-4693
NSN 5895-01-303-6892
NSN 5920-01-420-5324
NSN 6620-00-005-8612
NSN 6685-00-980-0375
NSN 5998-01-294-0781
NSN 5998-01-493-2061
NSN 5945-01-232-1513
NSN 6145-00-370-1964
NSN 5930-00-421-4764
NSN 5855-01-042-7990