A screw, (as modified) to which has been assembled one or more nonremovable washer(s).
NSN 5950-00-260-7725
NSN 5930-01-537-1390
NSN 6110-00-103-9358
NSN 6220-01-363-6652
NSN 5950-01-609-5322
NSN 5950-00-329-5721
NSN 5855-00-908-9314
NSN 5945-00-160-9194
NSN 5999-01-181-2738
NSN 5990-00-010-0591
NSN 5895-01-545-1604
NSN 7035-01-377-0760