What is a recommended solution for a screw that continually loosens?

A screw that continually loosens can be effectively secured using a screw-locking adhesive sealant. This type of adhesive is designed to create a bond that holds the screw in place while still allowing for future removal if necessary. The properties of a screw-locking adhesive sealant ensure that it fills any gaps between the screw threads and the holes they go into, which greatly reduces the risk of the screw loosening due to vibrations or external forces.

Using glue may offer some initial adhesion but is typically not suitable for applications where the screw must be removed later, as it can create a permanent bond. An ultrasonic cleaner is used for cleaning purposes and would not help in securing a loose screw. Penetrating oil is primarily used for loosening rusted or stuck screws, rather than preventing them from loosening.

In summary, a screw-locking adhesive sealant is specifically formulated to stabilize screws and maintain their position without causing permanent damage, making it the ideal solution for dealing with continual loosening issues.