A screw, (as modified) to which has been assembled one or more nonremovable washer(s).
NSN 5855-01-067-4129
NSN 6105-01-276-5362
NSN 5910-01-230-0713
NSN 2925-01-317-4543
NSN 5985-01-617-0109
NSN 6220-01-060-7602
NSN 6610-01-171-3010
NSN 6130-00-248-3259
NSN 5996-00-480-9238
NSN 5950-01-334-2987
NSN 6105-00-829-6714
NSN 5895-01-433-7060