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 6685-01-590-7798
NSN 7035-01-023-7859
NSN 5915-01-076-4200
NSN 5960-01-023-8800
NSN 6240-00-103-6646
NSN 5855-01-513-9601
NSN 4140-01-104-7508
NSN 6320-01-116-3980
NSN 5930-01-412-0636
NSN 5950-00-234-1250
NSN 5930-01-535-4188
NSN 2925-00-989-0523