When we usually screw in screws, we may not pay much attention to the word "screw connector", but it is actually working silently around us. Simply put, a screw connector is a small tool that uses threads to fix two things, such as the screws you screw in when assembling furniture, the screws that fix parts on bicycles, and even the small screws hidden in mobile phone cases.
Its working principle is very straightforward - the threads are like small hills. When the screws are screwed in, these "hills" will get stuck in the connected materials and tighten them more and more. Although it has a simple structure, many daily necessities will fall apart without it. For example, your chairs, computer keyboards, and even surgical instruments in hospitals are all stable with it.
Why is the screw connector so important?
Strong versatility: You can buy it in any hardware store, with a variety of sizes and shapes, suitable for various scenarios.
Reusable: You can put it back after disassembly, unlike glue, which is disposable.
Low cost: You can buy a pack for one dollar, which is much cheaper than welding and riveting.
However, it also has disadvantages, such as "slipping" (thread wear) if tightened too much, or rusting over time. So you have to pay attention to strength when using it, and it is best to choose metal screws made of rust-proof materials.
Tips
The earliest screw connector was invented by the ancient Greeks and used to squeeze olive oil. Later, Leonardo da Vinci also drew a sketch of a spiral water-lifting device, which shows how long the history of this thing is!
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