DIN981/GB912/GB810 M90 Round Nuts

Made from Austenitic stainless steel, they contain about 18-20% chromium and 8-10% nickel, offering exceptional corrosion resistance and good machinability.In the chemical, petrochemical, and food processing industries, SS304 nuts are favored due to their corrosion resistance and hygiene properties. They are also widely used in medical devices, architectural decorations, and machinery.

Stainless Steel Round Nut M90 (Standard: DIN981 / GB912 / GB810) is a specialized fastener designed for large-diameter threaded connections, commonly used in various types of heavy machinery and industrial systems. Its round design with slots allows for use with locking devices, effectively preventing thread loosening, making it suitable for high-load and high-vibration environments.

Material and Performance
This round nut is manufactured from high-quality 304 stainless steel, an austenitic stainless steel containing 18–20% chromium and 8–10% nickel. It offers excellent corrosion resistance and oxidation resistance. 304 stainless steel performs stably under normal temperatures and in most weak acid and alkali environments, remaining rust-free during long-term use. It is widely used in industries where cleanliness and corrosion resistance are critical.

Applications
Due to its reliability and durability, this type of round nut is extensively applied in chemical equipment, oil and gas pipelines, food processing machinery, building structural components, medical devices, and general mechanical assembly. Especially in environments involving frequent exposure to water, moisture, or corrosive media, 304 stainless steel round nuts demonstrate excellent service life and stability.

Processing and Installation
DIN981 series round nuts support installation with standard tools, and certain models can be used in combination with tab washers or locking mechanisms. The stainless steel material provides good machinability, allowing for cutting, welding, or surface polishing, facilitating on-site adaptation and maintenance.