Material, function and use of non-standard screws

Introduction to the material, function and use of non-standard screws
We all know that screws can be divided into standard screws and non-standard screws. Although non-standard screws do not have a fixed size and shape, their materials are diverse and their uses are also very wide.
Introduction to the material, function and use of non-standard screws
　　Non-standard screw material:
　　 There are many raw materials for the production of non-standard screws, such as high carbon steel, medium carbon steel, low carbon steel and alloy steel.
　　 Among them, low-carbon steel is mainly used to produce screws with a strength of 4.8 or 4 that do not require high strength, while medium-carbon steel is mainly used to produce screws with strengths of 8 and 8.8.
　　 As for high-carbon steel, the general utilization rate is not very high, and alloy steel has a series of alloys added to the material, which changes the performance of the screw.
　　The role of non-standard screws:
　　The function of the non-standard screw is to connect two products. Generally, it does not need to be matched with a nut. A single screw can be used to fasten the two products.
　　The use of non-standard screws:
To a certain extent, non-standard screws are special-shaped screws. They have a wide range of uses. You can see them in large-scale machinery and equipment such as space shuttles, ships and trains, and you can also see them in small products, such as glasses, Watches, electronic products, etc.