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 4140-01-082-3403
NSN 6610-01-300-8383
NSN 6240-01-309-6003
NSN 6145-00-225-8709
NSN 5935-01-087-5817
NSN 6150-01-472-1933
NSN 5925-01-282-9825
NSN 6645-00-601-6793
NSN 6145-01-216-4056
NSN 5930-01-532-0386
NSN 5895-00-474-6336
NSN 5925-01-495-2566