When a safety pin is used on delicate, slippery, or stretchy materials, it can rotate or shift position. By securing it with thread through that tiny hole, you reduce movement and keep it exactly where you want it. It’s a subtle design improvement that makes a big difference in certain situations.
Smart Organization Trick
The hole isn’t just helpful while using the pin — it’s also great for storage.
Crafters and seamstresses often thread multiple safety pins onto a string or loop them together using that tiny hole. This keeps them organized, prevents them from scattering in drawers, and reduces the risk of accidental pricks.
It’s a small feature that makes safety pins easier — and safer — to store.
Useful Beyond Sewing
That little hole also comes in handy outside the sewing world.
In travel or outdoor situations, you can attach a safety pin to: