A screw, (as modified) to which has been assembled one or more nonremovable washer(s).
NSN 5945-01-254-0340
NSN 5910-00-269-4755
NSN 5998-01-423-1743
NSN 5855-01-290-3248
NSN 5950-01-599-5109
NSN 5835-00-334-6556
NSN 6130-00-998-3855
NSN 6650-00-613-5660
NSN 5998-00-199-7766
NSN 5950-01-583-1265
NSN 6135-01-310-9866
NSN 6240-01-150-0651