A screw, (as modified) to which has been assembled one or more nonremovable washer(s).
NSN 5910-00-276-8592
NSN 5985-01-357-1398
NSN 5965-01-318-9474
NSN 6220-00-186-8565
NSN 5996-00-983-5549
NSN 6620-01-371-5040
NSN 5985-01-406-5209
NSN 7035-00-445-9657
NSN 4140-01-334-8637
NSN 5985-01-549-8679
NSN 5975-00-286-8506
NSN 6645-01-063-3371