In our daily life, the plum screw may not be as well known as other screws, but it plays an important role in many fields with unique advantages. From cars, motorcycles to bicycles, from hard drives to computer systems, plum screws are everywhere. Today, let's uncover the mystery of the plum screw and explore its advantages and disadvantages.

The design of the plum screw is unique, and the contact Angle between the notch and the screwdriver is closer to a right Angle. This design significantly reduces the potentially destructive radial force on the screw at the same torque. Thanks to this, the head diameter of the screw can be designed to be smaller under the same torque conditions, thus saving valuable installation space. This feature is especially valuable in electronics where space is limited.

However, the plum screw is not perfect. The smaller head size, while saving space, also brings new challenges. Smaller heads are more susceptible to corrosion, which can affect their service life. In addition, when using a plum screwdriver, if you are not careful, there may be a sliding phenomenon, and then damage the screw head. This difficult to remove characteristic is also one of the reasons why the plum screws are often used as anti-theft screws.

More interestingly, there is also a special plum screw with a small post in the center of its notch. This small post effectively prevents the insertion of the ordinary plum screwdriver, which further enhances the anti-theft performance. This design is particularly important in situations where a high degree of security is required.