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 5990-01-172-4553
NSN 5975-01-478-2925
NSN 5975-00-143-4658
NSN 6650-00-766-5137
NSN 5935-00-135-3932
NSN 5835-01-274-1035
NSN 5855-01-130-1501
NSN 5950-01-227-9932
NSN 5925-00-456-0651
NSN 6130-01-087-9669
NSN 6320-01-088-1109
NSN 5975-01-569-8203