A flathead screwdriver
is a screwdriver that has a simple, line-shaped "blade
". It fits screws that have heads that look like the international no symbol
(a circle with a line through it). It can be considered the basic screwdriver, as opposed to Phillips screwdrivers
, Torx screwdrivers
, hex screwdrivers
, and other such devices.
Flathead screwdrivers do tend to suffer from slippage, but they also can be improvised -- a butter knife and a flat keychain are two of the things that can be used in a pinch. You can count on almost any tool chest, Leatherman, swiss army knife, or other pocket mechanic tool to have a flathead screwdriver built in. This is why they're so ubiquitous.