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 4140-00-647-1142
NSN 6220-01-607-0130
NSN 5835-00-707-6266
NSN 6135-00-152-8729
NSN 5915-01-114-8706
NSN 5999-01-605-6310
NSN 6645-01-476-3660
NSN 5999-00-104-5582
NSN 6610-00-490-9514
NSN 5930-01-566-1571
NSN 6110-00-530-3779
NSN 5950-01-504-9636