How do new energy-saving wood structure screws reduce torque during installation and protect human health?

In the modern construction industry, wood structure screws are the core components for connecting wood. Their performance directly affects construction efficiency, structural safety and operator health. Traditional screws often cause wood damage and worker fatigue due to high friction and high torque requirements during installation. New energy-saving wood structure screws are reshaping engineering practices in this field through systematic technological innovation. The core breakthrough of this type of screw is to transform "antagonistic cutting" into "compliant pushing", which reduces the installation torque while building a human health protection barrier. Its technical connotation and application value are worth in-depth analysis.

From the perspective of mechanical principles, the revolutionary design of the new screw begins with the deep reconstruction of the thread structure. The stepped thread technology (TEN Stairs Thread Technology), represented by brands such as TENZ® and Paneltwistec AG, cleverly decomposes the linear cutting force of traditional threads into multi-stage extrusion by setting precisely calculated convex points on the outer diameter and valley of the thread. This design allows the wood fibers to be gently compressed rather than cut when the screw is screwed in, reducing the contact area by about 50%, and the friction resistance is reduced by 30%-50%. For example, in pine wood, traditional screws require a driving torque of 200 kgf·cm to complete the installation, while TENZ screws with stepped threads only require 100 kgf·cm to achieve the same effect. This mechanical optimization not only protects the original fiber structure of the wood, but also reduces the operator's physical exertion to half of the original level.

The collaborative innovation of the tip geometry and the drive system further enhances the effect of torque optimization. The evolution of self-tapping tips is reflected in two major directions: one is the Zip-Tip™ pre-cutting technology used in GRK RSS™ screws. Its front-end sharp angle and spiral groove can pre-separate the wood fibers at the beginning of screwing, and accurately cut the path like a scalpel, making the subsequent thread advancement smoother; the second is the multi-level guide design of the DAG tip, which effectively disperses the initial penetration resistance through three-level progressive hole expansion. These cutting-edge technologies enable screws to be installed without pre-drilling in hardwoods (such as oak and beech), avoiding the time loss and dust pollution caused by switching electric drills in traditional processes. At the same time, the embedded star drive interface (such as the TX hex drive) increases the contact points between the tool and the screw, improving the torque transmission efficiency to more than 95%, completely eliminating the slippage and stripping phenomenon common in traditional cross slots, and the operator no longer needs to apply additional pressure to maintain tool engagement.