A screw, (as modified) to which has been assembled one or more nonremovable washer(s).
NSN 6610-00-468-1958
NSN 5925-00-112-3460
NSN 5975-01-521-7222
NSN 5935-01-131-0387
NSN 5985-01-076-4635
NSN 5835-00-711-3371
NSN 5999-01-237-5377
NSN 5905-01-528-3619
NSN 5975-00-276-7559
NSN 4140-01-111-2486
NSN 5930-01-416-0830
NSN 6610-01-621-9504