When inspecting a standard padlock, you may notice a small hole at the bottom. Of course, a padlock is a security device. Its basic structure includes a lock body and a shackle.
The padlock is opened with a key, while a combination lock is accessed by entering a sequence of numbers. However, whether it’s a key-operated lock or a combination lock, there may also be a small hole at the bottom. What is the exact purpose of this small hole?
Drainage
The small hole often found at the bottom of a padlock.
The small hole at the bottom of the padlock serves as a drainage port when moisture enters the lock. It is certain that every lock will experience some level of moisture infiltration. Without a moisture drainage component, internal condensation could damage the lock’s components. The presence of a drainage hole prevents this from happening. Instead of accumulating inside the lock, moisture will escape through this small hole.
Rust Prevention
Since it acts as a drainage port, the small hole at the bottom of the padlock also helps prevent rust. Padlocks, especially industrial padlocks, are made from durable materials such as galvanized carbon steel. However, even though they are designed to withstand regular use, they are not immune to rusting. Moisture can interact with iron and iron-based materials used in the lock, leading to rust and corrosion.
By allowing moisture to escape from the lock, the small hole protects them from rust and corrosion. Moisture will exit through the small hole, thereby minimizing the risk of rust and corrosion.
Lubrication
Another reason that padlocks have a small hole at the bottom is for lubrication. The padlock contains mechanical moving parts inside the lock body.
Over time, some of these components may become stuck, which can lead to difficulty in unlocking the padlock. Fortunately, a little lubrication can often solve the problem easily. Typically, one can apply or spray a small amount of lubricant into the lock body through this very small hole.
The small hole can be an access point to unlock the padlock in special circumstances.
Secondary Access
Depending on the specific type of padlock, the small hole can serve as an access point to unlock the lock in special circumstances. For example, when a homeowner loses their key, they may need the help of a locksmith. At this point, locksmiths can unlock the padlock by inserting a special tool into this small hole. This is considered a trick.
In summary, the small hole at the bottom of the padlock serves several purposes. The primary purpose is drainage. Without the small hole, moisture would accumulate inside the lock body, leading to issues such as rust and corrosion. There are various types of padlocks, but they typically feature a small hole at the bottom to allow moisture to escape from the lock body.
