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 6320-00-925-0558
NSN 5950-01-085-7329
NSN 6610-01-657-1773
NSN 6220-01-522-3986
NSN 5905-01-432-9859
NSN 5930-00-119-5884
NSN 7035-00-981-7216
NSN 5985-01-162-6915
NSN 5975-00-529-3835
NSN 6240-01-436-4649
NSN 6135-01-426-8282
NSN 5910-00-732-5133