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 5920-01-166-5312
NSN 6135-01-596-3145
NSN 5999-01-298-1195
NSN 5855-01-038-2189
NSN 5999-00-281-3900
NSN 6130-01-281-5480
NSN 5998-00-782-6392
NSN 2925-01-494-6452
NSN 5999-01-482-3249
NSN 6220-01-003-9126
NSN 6130-01-337-0612
NSN 7035-00-529-3128