A screw, (as modified) to which has been assembled one or more nonremovable washer(s).
NSN 6650-01-363-7857
NSN 6110-01-612-0943
NSN 6240-01-432-0819
NSN 6150-01-312-2679
NSN 6105-01-167-9229
NSN 5975-00-909-3302
NSN 6110-00-218-0967
NSN 7035-01-322-0221
NSN 5996-01-228-9306
NSN 6105-01-559-7538
NSN 5960-00-793-4397
NSN 5835-00-092-1136