Philipsruuvimeisselit

Philipsruuvimeisselit, often referred to as Phillips head screwdrivers, are a common type of hand tool designed for driving and removing screws with a Phillips screw head. The Phillips head is characterized by its cross-shaped slot. This design was patented by Henry F. Phillips in the 1930s as an improvement over the slot-head screw, which was prone to cam-out, a phenomenon where the screwdriver slips out of the screw head under torque.

The tip of a Philipsruuvimeisseli features four radial slots that are tapered. This tapering allows the screwdriver to align itself with the screw head, and the design also provides a degree of self-centering. This self-centering action helps to reduce the likelihood of cam-out, especially when compared to traditional slotted screwdrivers. The size of a Philipsruuvimeisseli is typically indicated by a number, with smaller numbers denoting smaller tips. These screwdrivers are available in a wide range of sizes to accommodate various screw dimensions.

The handle of a Philipsruuvimeisseli is usually made of plastic or rubber, providing a comfortable and secure grip for the user. The shaft is made of hardened steel to withstand the torque applied during use. Philipsruuvimeisselit are ubiquitous in households, workshops, and professional trades due to their effectiveness and widespread use of Phillips head screws in a vast array of products and constructions. They are essential for tasks ranging from furniture assembly to electronics repair.