A screw, (as modified) to which has been assembled one or more nonremovable washer(s).
NSN 4140-00-912-1904
NSN 6620-00-021-2246
NSN 5996-00-583-9498
NSN 6650-01-651-3713
NSN 6650-00-432-9263
NSN 6620-01-394-4042
NSN 5895-00-160-5006
NSN 5985-01-369-6886
NSN 5996-01-548-2696
NSN 5975-00-840-2830
NSN 6110-00-691-9134
NSN 7035-01-224-2183