Expansion Bolt Loosening Causes And Solutions

Recently, a friend asked, "The expansion screws on my curtains loosened after being installed for a month or two. What's the matter? Didn't they be screwed properly?" In fact, this kind of problem is very common in our daily life. There are many reasons for the loosening of screws, Xiaorui will answer it for everyone based on his own understanding.

Reasons and solutions for loose expansion screws:

1. Fixed to the hollow brick

The editor also encountered such a situation some time ago. The expansion bolts fell off after a short time. At that time, someone who was decorating the house said that your house is made of hollow bricks, so the expansion bolts must not be fixed well. It is suggested to chisel the hole for the lower expansion bolt, and then fill it with concrete. That is to say, this place needs to be changed into a concrete wall, and finally the expansion bolts are drilled in this part, so that the expansion bolts can be installed. In the future, you can hang very heavy objects without problems.

Second, the installation is not in place, resulting in loose nuts.

If you are not a person who often installs expansion screws, you may miss a little bit, that is, when installing expansion screws, you must fully expand them, and screw them until they cannot be screwed. Some people are afraid of twisting the slip buckle. It is recommended not to buy low-quality expansion screws. Screws, you don’t have to be afraid to install them with pure national standard expansion screws, you must screw them to the position where they can’t be screwed!

3. Product quality problems, caused by slip buttons.

This kind of problem is too common, delaying work and delaying time, the same expansion screw of 10 cents, non-standard installation of a sliding buckle, but also a second installation, the cost of materials, time and labor is more than 30 cents, greedy The consequences of buying low-quality products cheaply, the solution is very simple, buy high-quality manufacturers, buy screws once and get it done!

Reminder: After driving the expansion bolt into the hole on the ground or wall, tighten the nut on the expansion bolt with a wrench, the bolt goes out, but the outer metal sleeve does not move, so the big head under the bolt pulls the metal sleeve Expand it so that it fills the entire hole. At this time, the expansion bolt cannot be pulled out.