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.
NSN 5965-01-199-4242
NSN 6110-01-152-2831
NSN 6610-01-514-5451
NSN 5996-00-150-8842
NSN 6135-00-497-0491
NSN 6220-01-512-2028
NSN 5935-01-537-0095
NSN 5910-01-533-6129
NSN 5915-01-492-3172
NSN 5905-00-826-8325
NSN 5915-00-777-4296
NSN 6650-01-185-2544