Types and Application of Screwdrivers

The screwdriver is a device specifically designed to insert and tighten, or to loosen and remove screws, which have a head with a contour such that an appropriate screwdriver tip can be engaged in it in such a way that the application of sufficient torque to the screwdriver will cause the screw to rotate.There are many types of screw heads, of which the most common are the slotted, Phillips, PoziDriv/SupaDriv (crosspoint), Robertson, TORX, and Allen (hex). Therefor, screwdrivers come in a large variety of sizes to match those of screws.

The typical hand screwdrive comprises an approximately cylindrical handle, which fixes to the tip of an axial shaft is shaped to fit a particular type of screw. The size and shape of handle is to be be held by a human hand. The handle and shaft allow the screwdriver to be positioned and supported and, when rotated, to apply torque. This type of screwdriver is used expediently. But different screws need different screwdrivers, several different size screwdrivers should be prepared.

The combination of screwdriver designs have a handle with detachable head. The part of the screwdriver which engages with the screw, called bits as with drill bits, allowing a set of one handle and several heads to be used for a variety of screw sizes and types. This type screwdrive best advantage is save much room for saddlebag. You aren't necessary to prepare several different size screwdrivers, just some different size screwdrive bits. But the bits lose easily.

The development of electrically powered screwdrivers, which, as the name suggests, use an electric motor to rotate the bit. The screwdrivers with a spiral ratchet mechanism to turn pressure (linear motion) into rotational motion also exist, and predate electric screwdrivers. This type screwdriver can improve efficiency, but weightiness.

The precision screw-driver is usually slight and finished. It designs various size head .The size is requested more exactitude. It often be used to repair watches.

The mini screwdriver is smaller and lighter than typical hand screwdrive. Some design with magnet tip, tire valve core tool, etc. It is necessary in lives and different with precision screwdriver, but it not as solid as the typical hand screwdrive.

Choosing a right size and type screwdriver for the screw is used to avoid damageing the screw or the screwdriver in the process of tightening it.

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Article Summary

In this article some types and application of screwdrivers are introduced.

Keywords

Screw Driver, Screwdriver, Turnscrew, Screw-drivers

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