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 5985-00-863-0450
NSN 7035-01-330-6768
NSN 6145-00-894-3434
NSN 6645-01-569-9087
NSN 6240-01-592-3176
NSN 5945-00-344-9615
NSN
NSN 6320-01-449-1014
NSN 5990-00-659-8067
NSN 6650-00-375-6632
NSN 6610-00-053-9565
NSN 5915-01-504-2312