The biggest advantage it offers is that, when used with the correct tooling in good condition, it does not cam out, allowing great torque to be applied. The pozidriv screw can easily be distinguished by a line embossed in the screw head at 45 degrees to the slots for the driver. The countersunk head is designed to sink flush with substrates to leave a smooth surface finish. They have single threads, designed to offer higher pull-out values and quicker insertion. 
 
Packaging design may vary
Twin thread general-purpose woodscrews.
• Head: Countersunk pozidrive compatible recessed.
• Finish: Zinc Plated.
• A twin thread screw ideal for a range of fixing applications.
• Ideal for fixing into a range of substrates including softwoods, hardwoods, chipboards and fibreboards.
• Extra deep insert bit recess allows a quicker and easier insertion, which enables a firmer positive drive.
• Twin thread and special wax coating also increases speed and ease of insertion.
• Twin thread provides increased holding power.