A screw, (as modified) to which has been assembled one or more nonremovable washer(s).
NSN 7035-01-653-5450
NSN 5945-00-232-2887
NSN 5975-01-357-8122
NSN 5960-01-389-9941
NSN 6240-00-858-0389
NSN 6240-01-325-8302
NSN 7035-01-602-9350
NSN 6240-00-079-0112
NSN 5930-00-144-3240
NSN 5960-01-072-9340
NSN 6685-01-448-2715
NSN 2925-00-402-5582