A screw, (as modified) to which has been assembled one or more nonremovable washer(s).
NSN 5996-01-431-9759
NSN 6105-01-509-8703
NSN 5965-01-500-2468
NSN 5935-01-247-3520
NSN 2925-01-497-9381
NSN 5965-00-518-0958
NSN 6645-01-593-3608
NSN 5935-01-381-1149
NSN 4140-00-694-1936
NSN 6135-01-142-6456
NSN 6150-01-097-5103
NSN 6620-01-452-4034