What is the purpose of the special screw?

Special screws are suitable for products with safety requirements and can only be locked in one direction. They are tamper-proof components. Due to the inclination of the special screw slot, the special screw can only allow the screwdriver to push the (one-way) screw in one direction. Special screws are usually used for commercial purposes to prevent damage from bad molecules. In fact, the special screw cannot be rotated and pulled up.

A flat-blade screwdriver can screw a flat-blade S-shaped one-way anti-theft screw, but it cannot be removed. There is no other screwdriver to screw. If you want to remove the slotted S-type one-way anti-theft screw, there is no way. The techniques and methods for removing the slotted anti-theft screws are as follows:

1. Special screw wrench, because it is impossible to remove the slotted S-shaped one-way anti-theft screw with an ordinary screwdriver, can we replace the tool? Then replace a special wrench. Of course, this wrench can only be customized. In other words, find a professional screw removal tool manufacturer to customize a tool to remove this slotted S-type one-way anti-theft screw,

2. The cost of custom wrenches is too high. What should I do? I only need to remove this screw, no other screws. Xiao Bian recommends welding, welding the screw head into a head shape that is convenient for welders to disassemble, so as to screw it out forcefully.

3. Special screw welding is useless. Can you not use this one-way S-shaped anti-theft screw? Of course, there is a way. If you no longer need to use this one-way S-shaped anti-theft screw, you can destroy it and separate the two workpieces. So how can we destroy it? Use an electric hand drill that is a little smaller than the screw, drill vertically in the middle of the screw head, and directly disconnect the slotted S-shaped one-way anti-theft screw. The two workpieces can be separated.

Special screw form

The structure of the special screw is made of stainless steel alloy. It consists of three parts:

① Hexagonal cap: It is a regular hexagonal prism, the edge distance of the hexagonal side is 6 0mm, the height of the cylinder is 2.5mm, the upper part is slightly curved convex, there is a slotted screwdriver edge groove in the middle, the lower part is an inverted conical cylindrical shape, it continues with the neck.

② Special screw neck: the cylindrical part extending between the hexagonal cap and the wire body, with a diameter of 3.0mm.

③ Line body: It is a threaded cylinder with an outer diameter of 4.5mm, an inner diameter of 3.0mm, and a conical tip.

How to use special screws: When internal fixation of fractures, screws can be used alone or in combination with homogeneous metal bone plates. When screwing out or unscrewing the screws, use a special hexagon socket or a flat-blade screwdriver. When one of them is difficult to screw out or screw out, the other can be replaced.

Special screws round head slotted screws are commonly used in clinical practice. However, if the screwdriver does not match the slotted opening, and the screwdriver is not used properly, the bone around the screw will grow firmly. When the screw is tightly embedded, it is easy to cause the slot to break and the wire to slide, which makes it difficult to screw in or out the screw, which brings great trouble to the operation. The developed screw can be screwed out or screwed out with a straight screwdriver and a hexagon socket. The two complement each other, take the long and avoid the short, and solve the problem of screwing out caused by the slotted thread of the screw.