Bicycles use a lot of screws.
In fact, it is no exaggeration to say that every single part is held together by screws.
Today, we are talking about those screws.
"Screws coming loose"—this is inevitable.
Because bicycles use so many screws and are constantly exposed to vibration while riding, no matter how careful you are, there will be times when they work themselves loose.
For this reason, specific torque values are set for each part and size to help prevent screws from loosening.
The tricky part is that if you try to prevent them from loosening by tightening them with all your might, you risk stripping the threads or damaging the parts due to overtightening.
I touched on this in my post the other day.
【PIT TIPS】What is the price of overtightening?
Now, regarding the delicate task of handling screws, there is another method: applying threadlocker to secure them.
Some screws come from the manufacturer with this already applied, so you don't have to do it yourself.
For example, the screws used to mount disc brakes are coated with threadlocker from the time they leave the factory.
The blue or red parts seen on the threads of the screws in this photo are the threadlocker.
Another typical area where it is used is on the threaded parts of spokes.
Applying threadlocker here can extend the healthy lifespan of your wheels.
（We always use it when building wheels with Gorilla Spun.）
While threadlocker is great for keeping screws from coming loose, you shouldn't just apply it to everything; the type and holding strength required change depending on the screw size and application, so you need to choose accordingly.
I grabbed these from the pit just now to show you how many types there are.
By the way, the item on the far left of the photo is the Thread Sealer used by the wheel building department at VELOCITY.
VELOCITY ／ Thread Sealer
A thread sealer used regularly by VELOCITY's proud custom wheel building division, the "Wheel Department." It comes in a convenient container that allows you to switch between a thin dropper tip and a brush depending on your preference. This is a low-strength anaerobic adhesive used to prevent nipples from rotating. A great companion for wheel building.
This is a special type of substance called an anaerobic adhesive. It penetrates the gaps between metal threads and hardens when oxygen is cut off. Since it doesn't harden while exposed to air, it's an excellent product that can be easily wiped away if any leaks out.
Threadlocker is incredibly convenient.
Why not use it appropriately to help with your own maintenance life?
For today, I would be happy if you just learned that things like threadlocker exist.