A screw, (as modified) to which has been assembled one or more nonremovable washer(s).
NSN 5999-01-193-5374
NSN 6610-01-609-7776
NSN 5945-01-276-0097
NSN 6150-00-723-3839
NSN 7035-01-413-6697
NSN 6145-01-108-6401
NSN 5950-00-200-1110
NSN 6610-00-641-3015
NSN 6620-01-207-0667
NSN 5895-01-304-2986
NSN 6320-00-405-2348
NSN 5895-00-335-7443