Screw Driver
A screwdriver is a tool for driving screws and frequently containing rotating other machine elements using the mating drive system. The screwdriver consists of a head or tip, which engages having a screw, a mechanism to use torque by rotating the end, plus some method to position and support the screwdriver. A typical hand screwdriver comprises an approximately cylindrical handle of the size and shape to become held with a human hand, as well as an axial shaft fixed to the handle, the tip which is shaped to suit a specific type of screw. The handle and shaft allow the screwdriver to become positioned and supported and, when rotated, to use torque. Screwdrivers are made in a number of shapes, and also the tip can be rotated manually or by an electric motor or any other motor.
A screwdriver amplifies the hand's turning motion to the small, specially designed tip that's inserted into the screw's head. There are many tip designs for special applications (such as appliance assembly), however the two most common are standard (also known as flat, flared, or straight) and Phillips (X-shaped) tips. The screwdriver handle can be of plastic or wood, sometimes with a rubberized cover to enhance grip. Other tips include clutch (hourglass shape), Robertson (square), and Torx (six slots). Some fasteners could be turned either by standard or Phillips tips.
A screw includes a head with a contour so that an appropriate screwdriver tip could be involved in it in such a way the use of sufficient torque to the screwdriver will cause the screw to rotate.
Types of Screw Driver:
- Flat Blade Screwdrivers
- Phillips Head Screwdrivers
- Allen Key or Allen Wrench or Hex Key or Hex Head Wrench
- Socket and Screwdriver Sets
- Cordless Electric Screwdrivers or Power Screwdrivers
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