A lot of people of the pocket hole screw as an after thought, but it should not be. Screw selection is honourable as as your selection of the just jig and clamp. The screw with the project forever, and the turn screw can make your life a entire lot easier. The confidential to pocket hole joinery is the of the screw. The unfolded tush head is to clamp the wood MD, not alter through the wood corresponding a tapering head does. Another design feature of the pocket hole screw that it is simply rib for the portion of the screw that enters into the mating piece of wood, Fully rib screws tend to push the wood apart slightly, and leave a weaker bond. The combination of the unfolded washer head coupled with the rib portion of the screw allow you to form an incredibly heavy link in a fraction of the time as remaining methods, the affianced chart to superior the square-toed screw and length for your needs. All Impakt Tools screws : Zinc Plating to protect your project from the screws corroding and showing rust An only one-sided thread design to increase holding power and minimize screws moving disclose in your project Type 17 self-drilling tip for easier swing and to eliminate the need to pre-drill A wide # 2 conservativist drive recess .