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 5985-01-528-6342
NSN 5990-00-201-1162
NSN 5920-00-765-2867
NSN 5925-00-518-9744
NSN 6645-00-442-7128
NSN 5855-01-254-4557
NSN 4140-01-543-2637
NSN 6320-00-242-3300
NSN 5910-00-926-9776
NSN 6685-00-503-2759
NSN 5905-01-435-4531
NSN 6645-01-207-9273