Hangers come in several different styles each with its own pros and cons.
Gutter screws vs hidden hangers.
Properly maintained aluminum gutters can last up to 30 years.
Spikes the big nail are the ones the op had.
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When hanging gutter systems contractors use these to secure guttering to the building.
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This is a much more convenient way to hang gutters.
Here are some more advantages to using the more current and common hidden hanger method.
They are installed by being locked into the gutters and screwed into the fascia with a screw that is often already a part of the hanger.
Although hidden hangers are stronger than spikes and typically last longer.
Since he calls these screws little i presume they are smaller than the spikes.
But there are also gutter screws the same size as spikes bigger if you count the thread that go in the same spot the spikes go.
They are spaced every two to three feet to ensure that your gutters will stay put through hell and high water.