F118 engine qualified
A nut having 12 drive points, 24 sides, and an integral washer which extends beyond the points or periphery. An integral feature is incorporated for locking on the threads of a mating member.
Classification: Nuts of iron or steel
NSN 5920-00-275-0498
NSN 5915-01-277-6320
NSN 5945-00-769-6911
NSN 6685-01-481-5725
NSN 5915-01-437-3572
NSN 5985-00-452-2228
NSN 2925-00-246-3077
NSN 4140-01-421-4045
NSN 6150-01-273-0183
NSN 4140-01-593-0139
NSN 5990-00-277-3763
NSN 5985-00-752-0632