The Hidden Purpose of the Hole in a Safety Pin – What Most People Don’t Know

Safety pins are everyday items that have quietly stood the test of time—simple, reliable, and incredibly versatile. From fixing wardrobe malfunctions to crafting DIY hacks, this humble tool is everywhere. But there’s one small feature on a safety pin that almost everyone overlooks: that tiny hole at the base of the coil.

If you've ever wondered why it's there, you're not alone. In fact, as the image suggests, 98% of people have no idea what the hole in a safety pin is actually for.

Let’s solve this mystery once and for all.

What Is the Hole in a Safety Pin For?

The small hole located at the base of the coil on a safety pin isn’t just decorative or part of the manufacturing process—it plays a mechanical and structural role.

Here’s what it actually does:

1. Tension & Flex Control

That loop and hole combination is what gives the safety pin its spring-like tension. When you open a safety pin, the bent wire flexes and stores energy. The hole at the end of the coil helps anchor the wire and allows it to compress and expandwithout deforming or losing tension over time.

Without that structural loop and hole, the pin wouldn’t close as securely or spring back into position as effectively.