Pozidrivscrewdriver

A Pozidriv screwdriver is a type of manual screwdriver used to drive screws with a Pozidriv drive recess. The Pozidriv drive is an improvement over the Phillips drive, designed to prevent cam-out, a phenomenon where the screwdriver bit slips out of the screw head under torque. Pozidriv screws are identifiable by their characteristic four-pointed star shape within the cross recess, with an additional set of smaller diagonal notches, or "ribs," between the main slots. These ribs are a key feature that differentiates Pozidriv from Phillips screws.

The Pozidriv system was developed in the United Kingdom and is commonly found in European manufactured goods. When using a Pozidriv screwdriver, it is crucial to use the correct size bit and to ensure it is fully seated in the screw head. Applying firm, consistent pressure is important to engage the ribs and prevent the bit from slipping. While visually similar to a Phillips screw, attempting to use a Phillips screwdriver on a Pozidriv screw, or vice versa, will result in a poor fit and a high likelihood of stripping the screw head or damaging the bit. This makes having the correct Pozidriv screwdriver essential for working with screws that feature this specific drive type.