Anti-loosening Nut Materials

Anti-loosening nuts are available in a diverse range of materials to meet the demands of various operating conditions. Carbon steel (such as medium-carbon steel subjected to quenching and tempering) offers low cost and moderate strength (tensile strength: 500–800 MPa), making it suitable for general industrial applications. Alloy steel (containing elements such as chromium, nickel, and molybdenum) boasts superior strength (tensile strength ≥ 1000 MPa) and fatigue resistance, making it ideal for high-load environments such as automotive chassis and aircraft engines. Stainless steel (Types 304 and 316), prized for its corrosion resistance-with Type 316 containing 2–3% molybdenum to enhance salt spray resistance by over 50%-is widely utilized in chemical pipelines and marine equipment. Copper alloys (such as H62 brass and tin bronze) are frequently employed in electrical connection components due to their electrical conductivity of ≥ 30% IACS.

 

Common Material Types

Carbon Steel: Characterized by lower cost and relatively high strength; commonly used for general industrial fasteners. Some products require surface treatments to enhance their corrosion resistance.

 

Stainless Steel: Includes grades such as 304 and 316. It offers excellent corrosion and temperature resistance, making it widely applicable in corrosive environments found in the chemical, food processing, and marine industries.

 

Alloy Steel: Examples include SCM435 and S45C. These are utilized in high-strength or high-temperature operating conditions, with hardness levels capable of reaching 34–43 HRC.

 

Nylon Inserts: While not part of the metal body itself, these serve as critical anti-loosening components. Typically manufactured from Nylon 6/6, they are embedded within the metal nut to provide friction-based anti-loosening functionality.