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Unlock the secret of the small hole in typical locks that many people don’t know how to use, turns out it has an unexpectedly interesting function.

These small holes on this lock have unexpected uses, but most people are unaware of their functionality.

18 March, 2024

Everyone has a few locks, to lock the gate, lock the house door, lock the safe… No matter which manufacturer, there are usually 1-2 small holes beside the keyhole on the lock.

All locks are made of metal to protect and secure the door, protect the family. Locks are used inside the house, on the porch, outside the gate, so they can be exposed to rain, sun, wind, and water… Although they are often made of brass, stainless steel, they will oxidize over time when exposed to sunlight, wind, rain and environmental factors, resulting in rust and water accumulation, which can cause rust and lock difficulty.

Therefore, if water cannot be drained, they will get “stuck”, leading to difficulty in opening. In some cases, keyhole manipulation techniques may be needed even when the key is still available but cannot be opened due to being stuck.

These small holes are often overlooked by users but they have many uses

And manufacturers have created small holes next to the keyhole to reduce water accumulation in the lock, prevent the risk of rust causing the lock to stick. Users almost think they have no effect and are unnecessary. But in fact, they serve as water outlets for the lock and are very useful. Therefore, when buying locks, especially locks placed in places prone to water exposure such as gate locks, outdoor locks, locks in rainy and sunny areas, you need to pay attention to choosing locks with these water outlets. Without them, rainwater will accumulate inside, causing the lock to quickly rust. Moreover, when using, keep in mind that after the rain stops, tilt the lock downward for water to drain out.

If you don’t want to have to break the lock after a period of time, remember the function of these small round holes. Some locks not only have 1 but also have 2 holes for water drainage.

The second function of these small holes is to make it convenient and easier to apply oil to the lock. After a period of use, the oil inside the lock dries out, making it harder to open. Many people usually apply oil to the keyhole, causing the oil to spread everywhere and each time they open, the oil sticks to the key, making it dirty and uncomfortable. Therefore, apply oil to the small hole next to it, that is the smart and correct way for the lock.

Frequently asked questions

The holes allow water to drain out of the lock, especially after exposure to rain or water. By tilting the lock downward, water can escape through these holes, preventing rust and ensuring the lock mechanism remains dry.

Yes, these holes also serve a second function. They provide a convenient and effective way to apply oil to the lock mechanism. Instead of applying oil directly to the keyhole, which can be messy and cause oil to spread onto the key, applying oil through the small hole is a smarter and cleaner method.

Locks placed in areas prone to water exposure, such as outdoor gates or rainy regions, are more susceptible to water accumulation and rust. By choosing locks with these water outlet holes, you can ensure that rainwater drains effectively, reducing the chances of rust and prolonging the life of your lock.

Regularly check and maintain your locks by applying oil through the small holes. After exposure to rain, tilt the lock downward to allow water to drain out. Remembering the function of these small holes and incorporating them into your lock maintenance routine can help prevent rust and ensure smooth lock operation.