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 6240-00-705-7731
NSN 4140-01-205-8401
NSN 6145-01-397-2892
NSN 6620-01-441-7896
NSN 5920-01-115-9710
NSN 6130-00-065-0543
NSN 2925-01-643-4472
NSN 6685-01-441-4170
NSN 4140-01-082-3403
NSN 4140-01-441-2339
NSN 5999-01-189-6855
NSN 6220-01-250-2376