A screw, (as modified) to which has been assembled one or more nonremovable washer(s).
NSN 5996-01-546-8404
NSN 6220-01-252-8398
NSN 5985-00-010-7754
NSN 5945-01-300-5937
NSN 6320-01-399-6177
NSN 5960-01-189-1644
NSN 5915-01-130-8735
NSN 5895-01-473-4231
NSN 5945-00-348-0662
NSN 5945-01-422-0381
NSN 6685-01-560-4448
NSN 5990-00-964-6422