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 5950-01-005-5080
NSN 6105-01-596-7746
NSN 5999-01-442-8261
NSN 6105-01-510-3915
NSN 5855-01-068-3683
NSN 5895-01-068-3279
NSN 5996-00-166-0037
NSN 5965-00-246-5612
NSN 5975-01-422-4522
NSN 5985-00-197-5392
NSN 6145-01-444-0103
NSN 5999-01-519-9170