Use j79-15 eng
A nut having 12 drive points and 24 sides. The bearing surface may be washer faced. An integral locking feature is incorporated in the design of the head or in the threads.
NSN 5920-00-269-6178
NSN 5925-00-022-2872
NSN 7035-01-587-9360
NSN 5925-01-564-3331
NSN 6650-01-157-1667
NSN 5945-00-952-1217
NSN 6240-00-416-6140
NSN 6240-00-226-3130
NSN 6135-01-462-6040
NSN 6620-01-394-0365
NSN 6645-00-235-4685
NSN 5920-01-433-7270