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 5990-01-181-4143
NSN 5990-01-529-7307
NSN 4140-00-024-5555
NSN 5975-01-210-9827
NSN 5975-00-837-1550
NSN 6645-01-592-2557
NSN 5985-00-269-3443
NSN 5910-01-011-4729
NSN 5945-00-411-3690
NSN 5905-01-593-7557
NSN 5990-01-072-6074
NSN 5990-01-287-9447