Dyed brown
A nut having a flat bearing surface and 6 flat sides with slots in its upper portion. It is designed to provide positive locking when used with a solid or split (cotter) pin. Excludes nut (1), plain, castellated, hexagon.
Classification: Nuts of iron or steel
NSN 6110-01-292-6642
NSN 5998-01-342-7189
NSN 5945-00-727-5846
NSN 4140-01-226-2182
NSN 6685-01-467-5171
NSN 6650-01-112-0453
NSN 6645-01-203-3767
NSN 6645-01-400-2119
NSN 6220-01-464-8928
NSN 6650-01-230-5155
NSN 6240-01-123-0475
NSN 5996-01-323-7763