For some screw fasteners used in some products, the required performance is different. Some require metric allen head cap screws to have anti-rust ability, and some hexagonal screws need anti-theft performance, corrosion resistance and so on. If we need hex screws with anti-rust properties, how should we choose? The anti-rust ability of the metric allen head cap screws mainly comes from the material characteristics of the screw itself and the surface treatment of the screw. Generally, the screw material with anti-rust ability is generally made of stainless steel, and the 304, 316 stainless steel grade screw fastener is used more, secondly, titanium material. The screw fasteners also have high rust and corrosion resistance, but the price is high. In addition to the material of the screw, the metric allen head cap screws has the ability to prevent rust, and the surface treatment is also very important. The stainless steel screw can be passivated fo...
