A screw, (as modified) to which has been assembled one or more nonremovable washer(s).
NSN 5999-01-313-1188
NSN 6135-01-627-3786
NSN 5965-00-079-0928
NSN 4140-01-058-1968
NSN 5915-01-473-2455
NSN 7035-00-870-0290
NSN 7035-01-091-1929
NSN 5999-00-099-6889
NSN 2925-00-132-1280
NSN 7035-00-349-8571
NSN 5910-01-247-1574
NSN 5965-00-150-1144