A nut having 12 drive points, 24 sides, and an integral washer which extends beyond the points or periphery.
Classification: Nuts of iron or steel
NSN 5975-00-417-0543
NSN 5965-01-421-9593
NSN 5910-01-479-5061
NSN 6240-01-242-7733
NSN 5999-01-133-9711
NSN 6150-01-342-2913
NSN 5835-01-371-8759
NSN 5835-00-752-6065
NSN 5905-01-168-3915
NSN 5920-01-166-4001
NSN 6105-01-380-9588
NSN 5998-01-642-3098