Safety pins are one of those everyday objects we rarely think about. They sit quietly in sewing kits, junk drawers, and emergency repair bags — simple, reliable, and surprisingly clever. But if you’ve ever looked closely at one, you may have noticed a small hole near the clasp and wondered why it’s there.
It’s not decorative. And it’s definitely not random.
That tiny hole was intentionally designed to make the safety pin even more practical.
A Hidden Function Most People Miss
The small perforation near the clasp allows you to thread a thin cord, string, or piece of thread through it. This serves a very useful purpose: it helps stabilize the pin when attaching it to fabric.
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.
