SKT II Super Screw delivers excellent performance and is safe to use
This R&D testing report introduces the product advantages of Taiwan Shan Yin SKT II® Super Screw through drilling-in torque, wood cracking, gripping force, breaking torque, and bending angle comparison. The test helps buyers understand how screw design may affect labor saving, wood fastening stability, anti-loosening performance, and installation reliability.
SKT II® Super Screw is designed for wood fastening and construction applications where installation efficiency, screw strength, wood crack prevention, and grip performance are important. Through product design and testing, Taiwan Shan Yin evaluates the screw's performance under different fastening conditions.
Product Advantage: Labor Saving
When a screw is drilled into wood, lower drilling-in torque can help reduce driving effort, electric power consumption, and manual labor. A smaller drilling-in torque may also help reduce the risk of breakage caused by excessive sticking force during installation.
| Sample | SKT II® Super Screw | Sxx | Fxx | Hxx |
| TEST 1 | 1.14 | 1.23 | 1.25 | 1.52 |
| TEST 2 | 1.19 | 1.20 | 1.32 | 1.63 |
| AVG | 1.165 | 1.215 | 1.285 | 1.575 |
Based on the original comparison data, SKT II® Super Screw showed a lower average drilling-in torque than the compared samples, supporting easier installation and improved labor-saving performance in wood fastening applications.
Wood Crack Prevention
When screws are installed close to the edge of wood, cracking may occur depending on screw design, wood condition, and installation force. The original report indicates that the newly designed SKT II® Super Screw helps reduce wood cracking issues near the wood edge in the demonstrated test.
Grip Performance After Installation
Screw loosening can occur when vibration or environmental conditions affect the fastening area. Good gripping force after installation helps improve fastening stability and reduce loosening risk. In this test, screws were drilled into wood and then pulled out to compare gripping force. A higher pull-out value indicates better grip performance.
| Sample | SKT II® Super Screw | Sxx | Fxx | Hxx |
| TEST 1 (kN) | 4.6 | 4.4 | 4.5 | 4.2 |
According to the original test data, SKT II® Super Screw showed a higher pull-out value than the compared samples, supporting better grip performance after installation.
Breaking Torque and Bending Angle
Changes in climate, natural conditions, wood movement, vibration, rain, snow, wind, and environmental exposure may cause wood to twist or deform. When wood movement creates tensile force, screws may face a higher risk of breakage. To improve fastening performance, both breaking torque and bending angle should be considered.
| Breaking Torque Test | SKT II® Super Screw | Sxx | Fxx | Hxx |
| TEST (N-m) | 3.9–4.0 | 3.9–4.0 | 3.7–3.8 | 3.7–3.8 |
In general, higher breaking torque indicates stronger screw resistance to breakage under force.
| Bending Angle Test | SKT II® Super Screw | Sxx | Fxx | Hxx |
| TEST | 55–60° | 45–50° | 85–90° | 85–90° |
A higher bending angle may indicate better bending flexibility, but an excessively high bending angle may also mean the screw is too soft. The original report indicates that a suitable bending angle range is around 50–60 degrees for balanced strength and flexibility.
Testing Conclusion
Based on the demonstrated R&D testing data, SKT II® Super Screw supports lower drilling-in torque, good grip after installation, suitable breaking torque, and a balanced bending angle. These features can help improve wood fastening performance, reduce installation effort, support anti-loosening performance, and lower the risk of screw breakage under wood movement or environmental changes.
This testing report demonstrates Taiwan Shan Yin's product testing approach for patented screws, wood screws, construction screws, and fastening applications where labor saving, wood crack prevention, grip performance, breaking torque, and bending performance are important.
