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 5990-00-736-8778
NSN 6620-00-182-7638
NSN 5975-01-430-9613
NSN 5935-01-649-1601
NSN 6610-01-328-7824
NSN 5920-01-070-8438
NSN 5998-00-857-0063
NSN 5985-00-827-6827
NSN 6145-01-243-0123
NSN 5855-01-444-5248
NSN 6320-01-585-8468
NSN 5998-01-360-0337