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 5999-01-131-7439
NSN 6150-01-627-7607
NSN 5998-00-615-2763
NSN 5985-00-753-1397
NSN 4140-01-348-5619
NSN 6240-00-284-1457
NSN 5910-01-323-5341
NSN 6130-00-277-7321
NSN 6105-01-485-3903
NSN 5925-01-475-5075
NSN 5965-01-584-9165
NSN 5998-01-593-2778