Why Are Hex Socket Screws Used On Many Devices?
In daily life, if we carefully observe the mechanical equipment on the connector – screw, we will find that a lot of mechanical equipment is used on the hex screw, this is why? What advantages does a hexagon screw have for the connection of mechanical equipment? In the face of these questions, Xinchi Fastener Company based on years of experience in the fastener industry will be happy to explain the problem to you.
Advantages of hexagon screws:
The outer head of the hexagon screw is round, and the center is a concave hexagon. The advantages of such a structure are obvious.
It can bear more load. Hexagon screws have six stress surfaces, which can withstand greater screwing force compared with the straight and cross screws with only two surfaces. (Note: The material of hexagon socket screws is generally made of stainless steel, carbon steel, and alloy steel, and there is basically no difference in the material of screws of other styles. The higher the performance level, the greater the strength. In the selection of screws, it must be strictly in accordance with the use of requirements to select suitable performance levels of screws. The price will be different if the screw grade is different.)
Hexagon screws can be countersunk. That is, the whole nut is sunk into the workpiece, which can keep the workpiece surface smooth and beautiful.
Hexagon socket screws are easy to install. Compared with the outer hexagon screws, the inner hexagon is suitable for more assembly occasions, especially narrow occasions, so it is very convenient for assembly and maintenance, as we as debugging.
Hex socket screws are not easy to remove. We usually use tools such as screw wrenches, screwdrivers,s and wrenches, and a special wrench must be used to remove hex bolts, so it is not easy to disassemble, which is also a benefit.
On this issue of wrenches, some people say that since hexagon bolts have the advantage of strength, if they are designed as countersunk holes, it will be difficult to pull them out in case of a slip. The outer hexagon bolt has the usual tools to fix it, so why not design it into the following shape?
As we all know, the outer hexagonal screws are exposed to the outside, and the wrench must have a certain space to screw it, so they needed countersunk holes that are large or prominent. However, the hexagon requires very small countersunk holes, and when space is not considered, the hexagon is basically useless. Therefore, what kind of screw should be used depends on the occasion of use.
Performance requirements of hex socket screws:
Hexagon screws are similar to countersunk screws, both of which are nails buried in the machine, and the connection strength is relatively large, but the hexagon screws must be installed and disassembled with the corresponding specifications of the hexagon wrench. Hex socket screws are generally used on various machine tools and their accessories. According to the requirements of use, hex socket screws have the following requirements on performance.
The nominal tensile strength of screw material needs to reach 400MPa class.
The bending ratio of screw material is 0.6; The nominal yield strength of screw material should be up to 400×0.6=240MPa class. After heat treatment, the material of high-strength screws with performance grade 10.9 can meet the following requirements:
a. The nominal tensile strength of screw material can reach 1000MPa class.
b. The bending ratio of screw material is 0.9; The nominal yield strength of screw material reaches 1000×0.9=900MPa.
The meaning of hexagon screw performance grade is the international standard, that is, screws with the same performance grade also have the same performance, regardless of the difference in the material and origin.
The classification of hexagon screws is basically what is described above. If the screw grade is different, then the price in the market must be different. General high-strength hex screws must be much more expensive than ordinary hex screws. The commonly used hex socket screws on the market are 4.8, 8.8, 10.9, and 12.9.
Tips: If the head of the hex screw is eccentric or crooked, it may lead to very serious problems. For example, from the appearance of the product, the overall will not be beautiful. And if the screw is installed eccentrically, it is easy to lead the production tool punch needle easy to break. The most serious can also lead to a hexagon screw broke head and a series of problems.
Anji Xinchi Fastening Piece Co., Ltd is a trustworthy fastener company, especially in furniture nuts. And we are the designated fastener supplier to“STAPLE”. As a trusted fastener supplier, Xinchi Fastener Company can offer a wide range of high-quality fasteners, including tee nuts, screws, bolts, rivets, washers, etc. If you want to know more about fasteners or want to wholesale fasteners, please feel free to contact us. And then our experienced and expert service team will reply to you as soon as possible.