A screw, (as modified) to which has been assembled one or more nonremovable washer(s).
NSN 6110-01-087-6041
NSN 6110-01-304-0273
NSN 7035-01-309-6709
NSN 5960-00-204-7506
NSN 5960-01-614-8005
NSN 7035-01-444-9249
NSN 7035-01-024-8067
NSN 6650-01-249-9240
NSN 6320-01-512-2031
NSN 5910-01-234-8308
NSN 5835-00-034-4976
NSN 5925-01-451-0518