I believe everyone knows that screws do not need high-strength nuts, do you know? In fact, stainless steel screws and high-strength nuts cannot be used together, what's the matter? Let's introduce maijin. When we install the two objects, we use stainless steel screws and nuts to hold them in place, so once the time is up, you will find that the screws and nuts will die. This is caused by the external thread of the stainless steel bolt and the structural deformation of the anchor bolt after tightening. In addition, for a long time, the screw and the screw hole will merge, so it will be difficult to disassemble the screw and nut in the future, so it is not recommended to install two or more products at the same time, that is, stainless steel screws and nuts. Hollow rivets are generally used in clothing, shoes and other fields. Solid cores can be riveted again. They are used to connect heavy products and workpieces. They are often non-detachable structures. Semi-hollow rivets are widely used. Beam rivets (with small pitch tails) are made of hard cables and can pass through 0.5mm thick steel plates without pre-holes. Bolts cannot be bent. Hollow nails (semi-hollow rivets) are made of copper wire. Generally speaking, there is no need to crack after riveting, and there are many types. Nowadays, some small toys on the shaft are now replaced by semi-hollow steel nails or female nails, which can greatly reduce the cost. Rivets and core bolts are mostly used for riveting of thin and soft materials that are generally not strictly controlled, and the manufacturing materials generally use materials with better plasticity.