What’s the Purpose of That Tiny Hole in a Safety Pin?

If you’ve ever used a safety pin, you may have noticed a small, seemingly insignificant hole near the head of the pin. While it might appear to be an imperfection or a quirk of manufacturing, this tiny hole actually serves a very practical purpose. Let’s dive into the history, functionality, and clever design behind this feature to uncover why it exists—and why it’s more useful than you might think.

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