A screw, (as modified) to which has been assembled one or more nonremovable washer(s).
NSN 6130-00-254-5159
NSN 6105-01-536-3901
NSN 6685-00-120-1009
NSN 5950-01-407-5574
NSN 6610-01-542-9725
NSN 5990-01-595-9441
NSN 5975-00-138-2693
NSN 6610-01-654-4685
NSN 5935-01-407-2554
NSN 5915-00-553-8755
NSN 7035-00-312-3055
NSN 6240-00-013-1282