What are the contraindications for screwdriver selection?

As there are many types and models of screwdrivers, the appropriate screwdriver should be selected according to the width and shape of the notch of the anti-theft screw head. That is, according to the different sizes of each notch, specific specifications such as micro, small, medium or large can be considered. Screwdrivers of similar models can still be used in actual operation. The contraindicated models are too far apart, otherwise it will be difficult to operate and easily damage the screw or screwdriver.
①It is forbidden to use a small screwdriver to screw larger screws, because one is not easy to tighten, and the other is the capacity of the screw tail groove.
It is easy to be screwed, and thirdly, the head of the screwdriver is easily damaged. At the same time, it is also forbidden to use a larger screwdriver to screw smaller screws, because it is easy to cause the small screws to slip due to excessive force.
②A Phillips screwdriver is used to tighten or loosen screws with a cross recess at the beginning. It is contraindicated to tighten or loosen screws with a slot.
③The slotted screwdriver is used to tighten or loosen the screw with slotted head, generally can not be used to tighten or loosen the screw with cross
Slot screws, because this will be very laborious.
④The elbow screwdriver is used in occasions where the height of the operating space is restricted, and elbow screws are generally not used in most occasions
Tighten or loosen the screw with the knife, because the rotation speed when using this screwdriver is not high, which affects the work progress.
⑤ The handle of the screwdriver is also one of the factors that must be considered when choosing. It is mainly reflected in whether it is "easy to use".
Related to personal long-term habits. The types of handles include straight handles, curved handles, massage handles, plastic handles, clamp handles, metal handles, etc.

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