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 6150-01-391-7735
NSN 6220-01-139-0126
NSN 6220-00-737-6621
NSN 5915-01-648-2126
NSN 6610-00-075-8147
NSN 5920-00-925-6661
NSN 6645-01-083-2001
NSN 5960-01-424-0590
NSN 6685-01-511-6014
NSN 6150-01-390-9418
NSN 6240-01-246-4258
NSN 6685-01-491-5620