Grade 10.9 12.9 8.8 A2 70 Stainless Steel Hexagonal Screw Blue Coated Screw

Grade 10.9, 12.9, and 8.8 stainless steel hexagonal screws are engineered for high-performance applications where strength and corrosion resistance are critical. The 10.9 and 12.9 grades, made from alloy steel, are heat-treated to achieve exceptional tensile strength, with 12.9 being the highest grade, suitable for extreme mechanical stress. The 8.8 grade, while slightly less robust, remains a reliable choice for medium-duty applications. These screws feature a hexagonal head, allowing for precise torque application and reducing the risk of stripping during installation. The blue coating, often achieved through a surface treatment like oxidation or a specialized finish, enhances corrosion resistance and provides a distinctive aesthetic, making these screws suitable for both functional and visually demanding environments.

A2-70 stainless steel hexagonal screws, on the other hand, are designed for environments where corrosion resistance is paramount. The "A2" designation refers to austenitic stainless steel, equivalent to 304 stainless, while "70" indicates a minimum tensile strength of 700 MPa. These screws are ideal for use in marine, chemical, or outdoor settings where exposure to moisture and corrosive elements is a concern. The blue coating adds an extra layer of protection against rust while maintaining the material's inherent resistance to oxidation. This combination of strength, durability, and aesthetic appeal makes A2-70 stainless steel hexagonal screws a preferred choice for industries ranging from food processing to architectural design, where both performance and appearance matter.