While this design was once a groundbreaking innovation, there are now weatherproof padlocks available on the market. These locks are specially designed to withstand the elements, keeping your belongings safe year-round, regardless of the weather.

In addition to preventing rust, the hole at the bottom of a padlock can serve another important function. If a padlock becomes stuck or refuses to open, even with the correct key or code, the hole can be used to apply synthetic lubricant. This helps loosen the mechanism and enables the lock to open smoothly again.

So, the next time you use a padlock, remember the tiny hole at the bottom isn’t just a design quirk—it’s a key feature that ensures your lock stays in top shape and performs reliably over time.