A screw, (as modified) to which has been assembled one or more nonremovable washer(s).
NSN 6105-00-017-3448
NSN 6645-01-354-7624
NSN 5925-01-167-7747
NSN 5915-01-057-0623
NSN 4140-00-976-5570
NSN 6645-01-245-8390
NSN 5920-01-270-0616
NSN 6110-00-165-1528
NSN 5905-01-068-3631
NSN 5935-01-560-8549
NSN 5975-01-012-7444
NSN 5950-01-123-1157