F118 engine qualified
A nut having one convex, spherical bearing surface, with 12 drive points, 24 sides. Items may have a removable collar. An integral feature is incorporated for locking on the threads of a mating member.
Classification: Nuts of iron or steel
NSN 4140-00-978-9590
NSN 5999-01-360-4742
NSN 6620-00-912-0255
NSN 5996-01-207-0804
NSN 5998-01-399-5982
NSN 5999-01-046-1800
NSN 2925-01-197-7864
NSN 5998-01-179-2432
NSN 4140-01-260-8106
NSN 6610-00-500-0180
NSN 2925-01-090-2391
NSN 6150-01-035-0741