No other part numbers with same form, fit, and function found.
A nut with projection(s) that is/are designed to localize heating, during welding, at predetermined points and to fuse with the metal to which the nut is mounted.
NSN 6645-00-408-3537
NSN 6645-01-081-4898
NSN 6650-01-123-0111
NSN 5965-01-605-1753
NSN 6130-00-496-0549
NSN 6110-00-766-0886
NSN 6105-01-496-5139
NSN 5950-01-508-8564
NSN 5855-01-152-0506
NSN 6220-01-363-9713
NSN 6135-01-540-9655
NSN 2925-01-408-9485