Introduction to the characteristics of hexagon socket screws

The head of a hexagon socket screw is round on the outside and has a concave hexagon in the middle. A hexagon socket screw is a common type of screw head with hexagonal sides. A hexagon socket screwdriver looks like a "7". It is made by cutting the two ends of a hexagonal steel bar and bending it to 90 degrees to make a hexagon socket wrench. It is sold in hardware tool stores.

Hexagon socket screws are often used in machinery, mainly for the advantages of easy tightening, disassembly, and not easy to slip. The hexagon socket wrench is generally a 90° bend, with one end long and the other short. When using the short side to screw in the screws, holding the long side can save a lot of effort and better tighten the screws. The long end is divided into a round head (hexagonal cylinder similar to a sphere) and a flat head. The round head can be easily inserted into the screw hole for easy disassembly. The manufacturing cost of the external hexagon is much lower than that of the internal hexagon. It also has the advantage that the screw head (the force position of the wrench) is thinner than the internal hexagon, and there are some places where the internal hexagon cannot replace it. In addition, machinery with low cost, low dynamic strength, and low precision requirements uses much fewer internal hexagon screws than external hexagons.

characteristic

Hexagon socket screws are widely used in many industries, which is inseparable from some characteristics of the screws. Let us take a good look at the characteristics of hexagon socket screws.

Q235 wire is more commonly used for hexagon socket screws. Of course, there are also iron screw wires. The wires of these screws can determine some of the characteristics of the hexagon socket screws.

The first is that the hardness of stainless steel screws is relatively high, but if it is an iron screw, the hardness is obviously much worse. This has something to do with the iron wire itself. The texture of iron itself is relatively soft, and there is no way to compare it with stainless steel wire. However, in order to make the iron screws reach the hardness, heat treatment is generally used to harden the iron screws. During the heat treatment process, it is necessary to ensure that the screws are heated evenly, otherwise not only the hardness of the screws will not meet the requirements, but also the screws will be easily bent, which will greatly increase the production cost of the hexagon socket screws. After heat treatment, the hardness of the iron hexagon socket screws can be raised to a certain level, but due to the problem of wire material, the quality is still not comparable to that of stainless steel wire.

One thing you need to pay attention to when using hexagon socket screws is to try not to let the screw head slip during use, otherwise it will make it difficult to remove the screw later. The above are some characteristics of hexagon socket screws, I hope it can help our customers.

plating

Hexagon socket screw electroplating generally refers to the electroplating of iron hexagon socket screws, and stainless steel hexagon socket screws are rarely electroplated. Iron hexagon socket screw electroplating is divided into environmentally friendly and non-environmentally friendly. Environmentally friendly electroplating of hexagon socket screws includes environmentally friendly blue zinc, environmentally friendly colored zinc, environmentally friendly nickel, environmentally friendly black zinc, environmentally friendly white zinc, environmentally friendly black nickel, etc. Non-environmentally friendly electroplating of hexagon socket screws includes white zinc, colored zinc, black zinc, black nickel, white nickel, black package, blue and white zinc, etc. Of course, there are some special electroplating, such as military green and Dacromet. If stainless steel hexagon socket screws need to be electroplated, it is also possible. However, in order to increase the salt spray time of stainless steel hexagon socket screws, they are generally electroplated and passivated. Sometimes customers also require electroplating of stainless steel hexagon socket screws. In order to make the product the same color as the stainless steel hexagon socket screws. The stainless steel screws are electroplated.

Classification

Hexagon socket screws are classified into cylindrical head hexagon socket bolts according to the head, which is the most commonly used. There are many types of hexagon socket screws. According to the material, there are iron, that is, carbon steel and stainless steel. Stainless steel hexagon socket bolts are also made of stainless steel SUS304 and SUS202. Semi-circular head hexagon socket bolts, which are also called pan head hexagon socket bolts. Countersunk head hexagon socket bolts, the head is flat and the inside is hexagon. There is also a special national standard called headless hexagon socket bolts. That is what we often call machine screws, payment screws, and set screws. These are all common names for headless hexagon socket bolts, but the meaning is the same. Of course, there are also some flower-shaped hexagon socket head bolts. This is less used and is basically hard to see on the market.

Although there are many types of hexagon socket screws with national standards, some of them are relatively special and few people use them in the market. The most commonly used ones are cylindrical head hexagon socket screws, also called cylindrical head hexagon socket screws.

Application

Hexagon socket screws are widely used, ranging from small hardware, small electronic products, electrical products, mechanical equipment products, to large cars, ships, airplanes and cannons. In short, hexagon socket screws are mainly used in electronics, electrical appliances, electricity, chemical industry, water conservancy, mechanical equipment, furniture and other fields.