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

It Improves Safety

Safety pins are designed—unsurprisingly—to be safe. The small hole helps guide the sharp point into the clasp and keep it there. By stabilizing the wire and maintaining proper alignment, the hole reduces the chances of the pin slipping open and accidentally poking the wearer.

It Adds Durability

That tiny opening also helps distribute stress across the metal when the pin is opened and closed repeatedly. This prevents the wire from bending out of shape or breaking over time, making the safety pin more durable and reliable for long-term use.