pozidriv

Pozidriv is a screw drive type developed as an improvement over the Phillips drive. It is widely used in Europe for wood and metal screws in furniture, cabinetry, and fixtures.

The Pozidriv geometry consists of a four-armed cross with additional smaller ribs between each pair of arms, creating eight contact points. The corresponding driver tip has matching ribs. This design increases the contact area between bit and screw head and helps to align the bit more precisely during tightening or loosening.

This configuration increases torque transmission and reduces cam-out when the screw is properly aligned, particularly under high torque and when used with power drivers. Proper engagement depends on using a Pozidriv bit with a Pozidriv screw head.

Pozidriv drives are not interchangeable with Philips drives. Using a Phillips bit in a Pozidriv screw (or vice versa) can slip, deform the head, or strip the slot; use the correct PZ bit for Pozidriv screws to avoid damage and ensure optimal performance. Common sizes include PZ1, PZ2, and PZ3, with variations for wood, sheet metal, and other applications. Pozidriv heads are typically marked with the PZ designation on the screw or packaging.

Origin and presence: Pozidriv was developed in the mid- to late 20th century as an improvement on cross-head drives and has become a standard in many regions, particularly Europe, for furniture hardware, cabinetry, and construction.