You’ve probably already noticed it: that tiny hole located under some padlocks. Many people think it’s just a manufacturing defect… and yet, it plays a crucial role in the longevity and reliability of your locking system.
A shield against moisture
Whether in rain, snow, or heavy condensation, your padlock is constantly exposed to moisture. Without this discreet hole, water would accumulate inside the mechanism, leading to rust, oxidation, and jams.
This small opening acts as a drainage valve , allowing water to escape and keeping the internal mechanism dry and functional.
The often overlooked anti-rust secret
Imagine an engine without lubricant:
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