A4-70 fasteners are high-quality stainless steel fastening components known for their superior corrosion resistance and excellent mechanical properties. The "A4" designation indicates the stainless steel grade, which is commonly referred to as 316 stainless steel in the ASTM standard. This grade contains a higher percentage of chromium and nickel than A2 grade stainless steel, providing enhanced resistance to corrosion, particularly in marine and highly corrosive environments. The "70" signifies the minimum tensile strength of the fastener, which is approximately 700 MPa.

These fasteners are extensively used in industries such as marine engineering, chemical processing, pharmaceuticals, and food processing, where resistance to corrosion and durability are critical. A4-70 fasteners are suitable for use in harsh environments, including saltwater exposure, acidic and alkaline solutions, and high-temperature applications.

A4-70 fasteners come in various types, including bolts, nuts, screws, washers, and threaded rods, and are available in a range of sizes and configurations to meet diverse application requirements. Their exceptional corrosion resistance, combined with their high tensile strength and durability, makes them ideal for demanding applications where reliability and longevity are paramount. When selecting A4-70 fasteners, it's essential to consider the specific environmental conditions and application demands to ensure optimal performance and longevity of the fastening system.