Not Just Decoration: The Hidden Function of a Safety Pin Hole

3. Aids in Manufacturing

During production, the hole serves as a guide to bend, twist, and form the pin consistently. It also helps with quality control: if the hole is misaligned, the pin may not function properly.

4. Offers Creative Uses

Some people thread string or thread through the hole to mark sewing projects or fabric pieces. It can also be used in crafts, such as jewelry-making, where safety pins become decorative accessories.

✅ Key Takeaway

The hole on a safety pin isn’t decorative—it’s essential. It provides spring tension, strengthens the structure, secures the locking mechanism, and aids both manufacturing and creative applications. A small detail, but without it, the safety pin would not work as safely or effectively.