Screwdriver and "wrench" is the same tool?
WrenchWrenchA manually operated tool for screwing bolts, screws, nuts, and other threads to secure the opening or sleeve of a bolt or nut. The wrench is usually provided with a clamping handle at one end or both ends of the handle part, and when an external force is applied to the handle, the bolt or nut can be screwed, and the opening or the hole of the bolt or nut can be screwed. When the utility model is used, an external force is applied to the handle in the direction of rotation of the screw thread, and the bolt or nut can be screwed.Wrenches are usually made of carbon structural steel or alloy structural steel.Several types of wrenches commonly used.Wrench: a fixed size opening at one or both ends is used to twist a nut or bolt of a certain size.Ring spanner: both ends have a working end with six corners or twelve corners. It is suitable for occasions where the working space is narrow and the ordinary spanner can not be used.Dual purpose wrench: one end is the same as a single head wrench, and the other end is the same as the plum wrench. The bolts or nuts with the same specifications are screwed at the two ends.Adjustable wrench: the opening width can be adjusted in a certain size range, and screws or nuts with different specifications can be screwed.Hook wrench: also known as the crescent wrench for screwing thickness restricted flat nut etc..Socket wrench: it is composed of a plurality of sockets with six corners or twelve corners and is provided with a handle, a connecting rod, etc., and is especially suitable for screwing bolts or nuts with very small or very concave positions.Inner six angle wrench: a L shaped six angle wrench, used exclusively for screwing six angle screws.Torque wrench: it shows the applied torque when screwing a bolt or nut; or when the applied torque reaches a specified value, it emits a light or audible signal. Torque wrenches are suitable for assembly work that specifies the torque magnitude.
The screw driver is divided into a traditional screw driver (Screwdriver) and a ratchet screwdriver (an electric screwdriver) (Ratchet screwdriver). A traditional screwdriver consists of a plastic handle and an iron bar that locks the screws. The ratchet screwdriver is made of a plastic handle and a ratchet mechanism. The latter allows the iron bar of the lock screw to be idle clockwise or anticlockwise, and the efficiency of the lock screw can be improved by the function of the idle running, and the power driver (hand) needs not to be changed back to the original position successively.
NoScrewdriver, screwdriverLu s d a o, Lu s Q from ZiA [screwdriver] used to turn the screws to force the tools in place, there is usually a thin wedge head, the screw head can be inserted into the slot or recess -- also known as the "screwdriver". The main word (minus) and cross (plus two).
