The SPT exterior wood screw is suitable for most commercial timbers including pressure treated lumber. It can be used on the balcony, wooden walkway, railing, decoration structure, deck frame blocking, wooden scaffolding, etc.
After all the design improvements continuously made according to the characteristics of various building materials and numerous driving-in tests, we have finally created this wood screw with high strength, high driving speed, low driving torque, high pull-out resistance, and other features such as leaving a flat surface or anti-rotation after driving in.
* 4 under-head reverse ribs and reverse threads that prevent the screw from retracting due to external vibration force after driving in.
* Undercut head design effectively maintains a flat surface of the board.
* Asymmetric high-low threads enhance pull-out resistance.
* 4 slots on the tip can effectively cut wood fibers, reduce the driving torque, and save labor.
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