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 5855-00-327-2112
NSN 5945-01-519-8004
NSN 5945-00-692-2183
NSN 5935-01-074-3093
NSN 6650-00-369-4429
NSN 5996-01-356-5579
NSN 5975-01-203-8020
NSN 5925-01-344-0518
NSN 5925-01-175-5059
NSN 5910-01-238-9376
NSN 6110-00-271-9928
NSN 6150-00-167-1018