NBK

Stainless Steel Screws

SNSX Screw Series by NBK: High-Strength, High-Temperature-Resistant Stainless Steel Screws

The Japanese company Nabeya Bi-tech Kaisha (NBK) introduces the SNSX screw series, designed for applications requiring a combination of high mechanical strength and corrosion resistance. The screws are manufactured from a unique stainless steel alloy known as SUS316L HiMo, characterized by a low carbon content to prevent corrosion and high resistance in marine and acidic environments.

 High-Temperature Resistance and Mechanical Strength
The most prominent feature of SNSX screws is the combination of high mechanical strength and extreme thermal resistance. Unlike standard stainless steel screws that lose strength at elevated temperatures, SNSX screws maintain high performance even at temperatures of 600°C. For example, the SNSX-109 model exhibits a yield strength of 765 N/mm² at this temperature, while the SNSX-88 model maintains 448 N/mm².
The screws are available in strength classes 8.8 and 10.9. The ability to provide such strength in a stainless steel screw allows engineers to reduce screw diameter or quantity in machine design, resulting in significant space savings and reduced overall equipment weight.

End-Use Industry Applications
Due to the properties described above, along with their non-magnetic characteristics, SNSX screws have become highly sought after in sensitive industries. They are widely used in flat panel display (FPD) manufacturing equipment, semiconductor production machinery, spray systems, vacuum applications, and marine environments. Their ability to operate under thermal cycling conditions makes them essential in machines exposed to variable heat loads.

Services and Added Value: Beyond the Standard Screw
NBK goes beyond product supply by offering a comprehensive range of customized developments and upgrades. The screws can be ordered after cleaning and packaging in a cleanroom environment. In addition, precise length adjustments, anti-vibration treatments, and laser engraving for component identification are available.
One of the most in-demand developments is captive processing, which ensures that the screw remains attached to a cover or housing even when opened, preventing screw loss or damage to sensitive internal components.

Conclusion
The SNSX series from NBK represents the forefront of fastening technology. It offers an optimal solution for engineers seeking the combination of carbon steel–level strength with the corrosion resistance of stainless steel under extreme heat and corrosive conditions.