Two drive points, at 180 degree angle, have been omitted
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.
NSN 6620-00-905-6590
NSN 5945-01-544-8982
NSN 6145-01-574-8312
NSN 5915-01-340-1899
NSN 6220-01-326-7204
NSN 6320-00-149-7570
NSN 5960-01-437-1315
NSN 5996-00-014-5822
NSN 4140-00-388-6829
NSN 5930-01-450-7919
NSN 5990-01-024-9659
NSN 5985-00-518-6245