What’s the Purpose of That Tiny Hole in a Safety Pin?
That tiny hole in a safety pin isn’t decorative—it’s essential. It acts as an anchor point for the spring, helping the pin lock securely into place. This keeps the sharp end stable and prevents it from slipping or popping open.
Because of this small feature, safety pins are safer and more reliable than regular pins. It’s a simple but clever design detail that has kept the safety pin effective for over 170 years.
Bottom line: that little hole is what makes the safety pin work.
