A screw, (as modified) to which has been assembled one or more nonremovable washer(s).
NSN 6645-01-531-3142
NSN 5960-01-605-9921
NSN 5855-01-524-7094
NSN 5905-00-687-2121
NSN 5930-01-578-6075
NSN 5855-00-832-9341
NSN 5998-01-043-1570
NSN 6240-01-476-7935
NSN 5965-01-330-5825
NSN 2925-01-510-9378
NSN 5920-01-052-4280
NSN 5996-01-553-7399