Stainless Steel Screw Standard

Stainless steel hexagon socket head screws can remain stainless for many years in the atmosphere. The main materials are 304 and 316. As long as the stainless steel hexagon socket head screws are within the national standard range, the production tolerance can be directly measured with a caliper. Stainless steel hexagon socket head screw is a general term. Since the performance of stainless steel hexagon socket head screw is determined according to the material performance index, when we introduce stainless steel hexagon socket head screw products, it is not necessary to distinguish each sub-category. .

The domestic production of stainless steel hexagon socket head screws is mostly in accordance with two implementation standards, one is the national standard, represented by GB, and the other is the German standard, represented by DIN. Each different type of screw has a corresponding national standards or German standards. The strength index of the stainless steel hexagon socket head screw is fixed, and it cannot be changed by post-processing. If you need a stainless steel hexagon socket head screw with higher strength, you can choose to use SUS316 stainless steel hexagon socket head screw, or you can Use some auxiliary means to improve, such as applying a little thread glue on the thread to increase the friction of the screw.

M6 stainless steel hex socket head screw standard M8 stainless steel hex socket head screw standard M10 stainless steel hex socket head screw standard

Stainless steel hexagon socket head cap screws do not mean that they will not rust 100%, but compared with other carbon steel screws, its anti-rust performance is much better. Using stainless steel screws in a normal atmospheric environment can achieve two It will not rust for ten years. If the environment is harsh, the hope value should be reduced. The good thing is that stainless steel screws are consumables. If any stainless steel hexagon socket head cap screws are found to be seriously rusted, they can be replaced directly.

Except for some products such as washers, retaining rings, nuts, and pins, fasteners made of SUS304 stainless steel and SUS316 stainless steel can be collectively referred to as stainless steel hexagon socket head screws. In actual procurement, you need to explain in detail Which specific standard is the purchased stainless steel hexagon socket head cap screw, otherwise it will be wrong. Therefore, when purchasing stainless steel hexagon socket head cap screws, it is necessary to fully describe its appearance or standard in words. Different standards correspond to different mechanical properties and application standards. Although the materials used to produce stainless steel screws include ferrite, martensite, austenite, precipitation and other standards, in actual application production, austenite is still used. Body stainless steel is the main material, which is the standard of SUS304 stainless steel hexagon socket head cap screws and SUS316 stainless steel hexagon socket cap screws.

Why do we need to distinguish between these different materials? The anti-corrosion time of stainless steel hexagon socket head cap screws will be different depending on the material selection, and in some more sophisticated electronic equipment, the material will also affect the interference of communication signals and currents, all of which have strict design requirements. The metal content in austenitic stainless steel hexagon socket head cap screws is the most stable, it can be properly deformed to facilitate mold production, and it also has a certain toughness suitable for installation, and the adaptation of nickel content can also meet the requirements of anti-rust. The coefficient of expansion also exactly matches the current air pressure environment. The only disadvantage is that it is easier to heat and lock up.

The standard of stainless steel hex socket head cap screws is embodied in the size of each part and the passability of the thread, while the through groove and thread chamfer between the thread and the screw are not specified in the national standard, as long as it is within the range of natural tolerance It can be judged as a qualified product, and there are specific standards for appearance defects, including the imprint, finish and packaging of stainless steel hex socket head cap screws.