DIN981/GB912/GB810 M100 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.

DIN981/GB912/GB810 M100 Round Nut is an industrial-grade fastener specifically designed for large-diameter threaded connections. Featuring a round body design, it is typically used in combination with tab washers or shaft threads to provide excellent anti-loosening performance. It is widely applied in the locking positions of large-scale machinery, heavy industrial equipment, and bearing housings.

Material and Performance
This product is manufactured from Austenitic Stainless Steel 304 (SS304) , containing approximately 18–20% chromium and 8–10% nickel , offering outstanding corrosion resistance and oxidation resistance. SS304 performs stably across a wide range of industrial environments and can withstand long-term exposure to moisture, weak acids, and weak alkalis, significantly extending service life.

Structure and Specifications
The M100 round nut features a coarse thread profile , which facilitates quick installation and disassembly while providing strong vibration resistance and load-bearing capacity. The threaded section is unmarked (No Mark) , and the surface retains the natural stainless steel color (Natural Color), without electroplating, presenting a clean and simple appearance.Conforming to the DIN981 , GB912 , and GB810 standards, this nut ensures high compatibility and interchangeability. With a strength class of 700 MPa , it is suitable for medium to high-strength fastening applications.

Applications
The M100 stainless steel round nut is widely used in heavy machinery, mining equipment, petrochemical plants, food processing machinery, water conservancy projects, metallurgical facilities, and various large rotating shaft systems. Its excellent corrosion resistance and structural stability make it especially suitable for outdoor, high-humidity, highly corrosive, or high-vibration working environments.

Installation and Compatibility
This type of round nut is typically installed using specialized tab washers, shaft retaining rings, or hook wrenches, ensuring a simple and reliable assembly process that effectively prevents loosening due to axial movement or vibration.Thanks to its good machinability, the nut can be polished, adjusted, or welded on-site as required, making it adaptable to a variety of application scenarios.