ruuvivääntimet

Ruuvivääntimet, commonly known as screw drivers, are hand tools used for turning screws. They typically consist of a handle and a shaft, with a tip designed to fit into the slot or recess of a screw head. The primary function of a ruuviväännin is to apply torque to the screw, either to drive it into a material or to remove it.

The shape of the tip is crucial for proper engagement with the screw head. The most common types include the slotted (or flat-head) ruuviväännin, which has a single flat blade, and the Phillips head ruuviväännin, characterized by its cross-shaped tip. Other specialized types include Torx, Pozidriv, and Robertson (square) ruuvivääntimet, each designed for specific screw head designs.

Ruuvivääntimet come in various sizes, determined by the length of the shaft and the width or diameter of the tip. The handle is usually made of plastic or rubber for grip and comfort. For applications requiring higher torque, some ruuvivääntimet feature a hexagonal shaft that can be turned with a wrench, or a T-handle design.

While manual ruuvivääntimet are ubiquitous, powered versions, such as electric screwdrivers and impact drivers, have become increasingly popular for tasks requiring speed and efficiency. These powered tools automate the turning action, reducing user fatigue and speeding up assembly and disassembly processes. Proper selection of the ruuviväännin type and size is essential to avoid damaging the screw head or the workpiece.