Head markings indented at 120.0 degrees
A nut having a flat bottom and 6 sides. An integral feature is incorporated for locking on the threads of a mating member. Excludes nut (1), self-locking, cap.
Classification: Nuts of iron or steel
NSN 6240-00-844-1758
NSN 5910-01-305-2915
NSN 6135-01-459-0089
NSN 6145-01-503-6654
NSN 6650-00-246-3751
NSN 5999-00-977-1564
NSN 6650-01-422-1037
NSN 5998-01-398-5391
NSN 6320-00-937-5625
NSN 5855-01-476-0941
NSN 5990-01-193-0487
NSN 5990-00-724-0171