It break the traditional limitation of pre-drilling.
The patent of this screw is held by SEC.
Double Nick Point
Drill into hardwood without pre-drilling and prevent wood from cracking.
Special angle design can increase tensile strength and give an enhanced pull-out resistance in a variety of applications.
Also firmly clinches plates together to close gaps in multi-ply assemblies.
Reduce the torsion of the upper teeth.
Specail Torx20 Head
Perfectly sink into wood without burrs.
No need for pre-drilling and helps positioning without slipping.
And the head can be completely sunk without burrs.
Length: 50mm ~ 75mm
Usage：Hardwood、softwood、wooden truss、floor、outdoor deck railing、others
Characteristic：Less effort and no burrs.