Slots in upper portion
A nut having 12 drive points, 24 sides, and an integral washer which extends beyond the points or periphery.
Classification: Other articles of nickel, nesoi (excluding cloth, grill & netting of nickel wire)
NSN 5990-01-215-5997
NSN 6150-01-603-1741
NSN 5905-01-176-6938
NSN 5990-01-548-3711
NSN 5930-00-114-2875
NSN 5998-01-379-4043
NSN 5905-00-529-0508
NSN 6145-01-022-5652
NSN 6150-00-496-0332
NSN 5965-00-222-7394
NSN 5975-01-474-6278
NSN 5996-01-473-2183