A screw, (as modified) to which has been assembled one or more nonremovable washer(s).
NSN 5945-00-924-4609
NSN 4140-01-268-2898
NSN 6110-01-006-1340
NSN 6150-00-183-7710
NSN 6220-01-104-3006
NSN 5855-01-519-4991
NSN 6645-01-079-7983
NSN 6320-01-530-4870
NSN 5925-01-211-3412
NSN 5965-00-474-6974
NSN 5920-01-182-1545
NSN 5920-01-507-8889