A screw, (as modified) to which has been assembled one or more nonremovable washer(s).
NSN 5965-00-170-5254
NSN 5905-00-391-2377
NSN 5990-01-586-8202
NSN 5999-01-073-0657
NSN 5996-01-308-0865
NSN 5945-01-365-3601
NSN 5998-00-918-2904
NSN 5996-01-517-2328
NSN 5960-01-439-3731
NSN 5895-00-231-4102
NSN 5950-01-273-5717
NSN 5975-00-890-3324