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 6620-00-221-6639
NSN 5998-01-273-0124
NSN 5990-01-341-5735
NSN 6650-00-891-9850
NSN 4140-01-531-2231
NSN 5990-01-540-1619
NSN 5999-01-205-7533
NSN 5985-00-338-6424
NSN 6130-00-758-4485
NSN 5990-00-402-7721
NSN 6320-01-092-4101
NSN 4140-01-144-5179