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 5920-00-436-0031
NSN 6320-01-399-6177
NSN 6110-01-453-2834
NSN 6610-01-154-5493
NSN 5985-00-392-0522
NSN 6110-01-169-8193
NSN 6320-01-551-3553
NSN 6650-01-067-0132
NSN 5990-01-380-7815
NSN 6320-01-607-1491
NSN 6685-01-410-7583
NSN 6240-01-165-2693