ruuvinvääntimenä

Ruuvi väännin, often translated as a screw driver, is a hand tool used for turning screws. It consists of a handle and a shaft, with a tip that engages with the slot or recess in the head of a screw. The tip of a ruuvi väännin is designed to match the type of screw head, with common types including slotted (flathead), Phillips, Pozidriv, Torx, and hexagonal. The handle provides leverage for turning the screw, while the shaft transmits the torque to the tip.

The principle of operation is simple leverage. By rotating the handle, the user applies torque to the screw, causing it to turn and either drive it into a material or remove it. The size and shape of the ruuvi väännin are matched to the size and type of screw being worked on. Using the correct ruuvi väännin prevents damage to both the screw head and the tool itself.

While traditional manual ruuvi väännin remains widely used for its simplicity, control, and low cost, powered versions, often called power screwdrivers or drills, have become increasingly popular. These tools utilize electric motors to drive the screw, significantly reducing the physical effort and increasing the speed of fastening. They often feature adjustable torque settings to prevent overtightening. The development of ruuvi väännin has been crucial in construction, manufacturing, and everyday repairs, enabling efficient assembly and disassembly of countless items.