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 5905-00-568-0795
NSN 6150-00-900-0539
NSN 6150-00-467-0803
NSN 7035-00-794-0792
NSN 5965-01-441-1525
NSN 6110-00-450-9883
NSN 6240-01-178-9113
NSN 5895-01-525-9783
NSN 6220-00-706-7477
NSN 4140-01-660-2458
NSN 6685-01-032-7516
NSN 6650-01-457-8743