A nut having a sleeve portion on its under side, which can be crimped or clinched to hold the item in place when inserted in a hole.
NSN 5965-01-025-5129
NSN 5990-01-562-4521
NSN 6220-01-509-6882
NSN 5950-00-838-5146
NSN 5996-00-678-5481
NSN 5950-00-971-7503
NSN 6135-01-598-9889
NSN 7035-01-176-2208
NSN 5915-01-333-1129
NSN 5998-01-199-9252
NSN 4140-01-397-1311
NSN 6685-01-458-0775