What is that little hole at the bottom of
1. The Overlooked Feature
A padlock seems simple, yet the small hole at its base is easy to miss.
As the article notes, it’s “essential to the lock’s function,” even though most people never think about it.
2. Protection From Moisture
Padlocks face rain, heat, and humidity, and trapped water can lead to rust.
The hole works as a drainage point so moisture can escape, preventing corrosion and jams.
3. Easier Maintenance
The opening also lets lubricants reach the inner parts.
The article explains that “a few drops through the hole can loosen the pins,”
helping restore smooth movement when dirt or cold weather stiffens the lock.
4. A Durable Design Choice
Even modern weather-resistant padlocks keep this feature.
The hole remains a useful “backup drainage channel” and pressure release point,
proving why the design has lasted.
