A screw, (as modified) to which has been assembled one or more nonremovable washer(s).
NSN 5950-00-242-4995
NSN 5950-01-230-9687
NSN 6110-00-271-9928
NSN 5985-00-220-2139
NSN 6610-00-247-9692
NSN 6610-00-664-2190
NSN 6320-00-823-2015
NSN 5996-01-064-6969
NSN 5990-01-081-3845
NSN 6145-01-594-2389
NSN 5835-01-515-6537
NSN 5930-00-674-9686