Sometimes Xiao Bian will encounter one or two customer inquiries, whether the spot screws, or some ask whether there are no M4 screws. The screw is really not in stock and it is custom-made. General specifications market (shì chǎng) can be purchased, but need to explain, not all manufacturers can produce standard screw fasteners will have the spot screw, take our screws, standard parts we want to produce custom , but the spot is really not. Some common markets (shì chǎng) are very large, and it is more cost effective to purchase the spot than it is to manufacture. Moreover, some national standard parts are not commonly used, and they also need to be custom-made because the use rate of these screws is not high, and many manufacturers are not stocked. So when looking for screw fasteners, be sure to pay attention to these issues (Emerson).
When many users customize screws, most of the materials used are stainless steel (stainless acid-resistant steel). Why? This is not only because the stainless steel (stainless acid-resistant steel) screw has rust-proof and corrosion-resistant properties, but it also has good ductility and has a certain advantage in the manufacturing process. Non-standard screws utilize the physics and mathematics of the object's bevel circular rotation and friction, and progressively fasten the tool's tools. Screws are a common term for fasteners, spoken daily. Stainless steel screw refers to the shape of a screw made of stainless steel screw wire rod, and it is threaded in the rear. Its material is stainless steel. Stainless steel screws are divided into stainless steel SUS201 screws, stainless steel SUS304 screws, and stainless steel SUS316 screws. The precision screw not only has a small screw head, but also has a small screw diameter, a short screw length, and a relatively light weight, and some precision screws can be ignored. Precision screw production and manufacturing process requirements are relatively accurate, in terms of tolerance requirements, size requirements and other aspects are very high. For general civil use, most products (Product) will use stainless steel (Material) as the wire for producing screws without special requirements. Moreover, the stainless steel screws only need to be cleaned after the production, and the appearance will be very bright, compared with carbon. Stainless steel screws are very good, but also has a certain anti-rust effect, so stainless steel screws are generally not required, will only be cleaned (chǔ lǐ). When stainless steel screws are used for plating or other surface treatments, scratches are likely to occur. This is because plating is not a one-shot surface treatment, but the screws are all placed together for electroplating. So you can't avoid bumping, and it's easy to leave scratches at a touch. Causes a defect in the screw. In addition, the stainless steel screw performance after cleaning can meet the requirements of the use, and the production cost does not need to be so high. Therefore, many users use stainless steel screws.