SKT® II Bimate Stainless Steel Screw Outperforms Competitor's Regular Stainless Steel Screw

This R&D testing report compares Taiwan Shan Yin patent SKT® II Bimate Stainless Steel Screw with a competitor's regular stainless steel screw installed in hard wood. The test focuses on screw twisting, deformation, drilling behavior, and structural stability after installation.

Stainless steel screws are often selected for applications requiring corrosion resistance and long-term durability. However, when a regular stainless steel screw is used in hard wood, drilling torque may cause twisting or deformation if the screw strength is not sufficient for the application. This may affect fastening stability and installation reliability.

Testing Purpose

The purpose of this test is to compare the deformation and twisting condition of Taiwan Shan Yin patent SKT® II Bimate Stainless Steel Screw and a competitor's regular stainless steel screw after drilling into hard wood. The test helps buyers understand how screw strength and product design may influence installation performance in demanding wood fastening applications.

Testing Method

• A straight reference line was marked on each screw sample before testing.
• The screw samples were drilled into hard wood.
• After drilling, the line variation was observed to evaluate twisting and deformation.
• The comparison included Taiwan Shan Yin patent SKT® II Bimate Stainless Steel Screw and a competitor's regular stainless steel screw.

Testing Process and Result

During the test, the competitor's regular stainless steel screw showed severe twisting after drilling. The reference line on the screw twisted noticeably, indicating that the screw structure was deformed during installation.

In comparison, the patent SKT® II Bimate Stainless Steel Screw showed no visible twist after drilling. The reference line remained straight, indicating better structural stability and improved resistance to deformation during hardwood fastening.

Conclusion

• The competitor's regular stainless steel screw twisted severely and showed deformation after drilling into hardwood.
• Severe twisting may damage the screw structure and reduce fastening stability after installation.
• SKT® II Bimate Stainless Steel Screw is designed with stronger mechanical properties. According to the original test report, its mechanical property strength can reach Class 10.9, while normal 304 stainless steel is listed as Class 5.8.
• The test result showed no visible twisting or deformation on the patent SKT® II Bimate Stainless Steel Screw after drilling, supporting more stable performance in hard wood applications such as acacia wood.

This testing report demonstrates Taiwan Shan Yin's R&D testing capability for stainless steel screws, patented screws, wood screws, and construction fastening applications. Through visual deformation comparison, buyers can better evaluate the importance of screw strength, product design, and application suitability when selecting stainless steel screws for hard wood installation.