A screw, (as modified) to which has been assembled one or more nonremovable washer(s).
NSN 5910-01-371-0902
NSN 6130-00-291-4877
NSN 5895-00-679-8606
NSN 5895-01-468-7048
NSN 6685-01-444-0974
NSN 5950-01-343-4449
NSN 5998-00-180-8262
NSN 6620-01-451-3742
NSN 6150-00-107-8208
NSN 2925-00-759-5465
NSN 5960-00-219-6148
NSN 6610-01-491-6226