What are the precautions for using screwdrivers?

1) When using a screwdriver to fasten or remove a live screw, the handle of the screwdriver should be kept dry and clean to prevent leakage during live operation. Do not use the threaded screwdriver, put an insulating tube on the metal rod of the screwdriver, and do not touch the metal rod of the pressure riveting screwdriver to avoid danger.
2) When using a small-pointed screwdriver to loosen the screw, pay special attention to the uniform force to avoid touching other charged objects or stabbing the other hand due to slipping.
3) Large screwdrivers are generally used to fasten larger screws. When in use, in addition to the thumb, index finger and middle finger to clamp the handle, the palm of the hand should also be held against the end of the handle, so as to prevent the screwdriver from falling off when rotating.
4) Small screwdrivers are generally used to fasten small screws on wiring posts for electrical devices. When in use, the grip can be clamped with your thumb and middle finger. Hold the end of the handle with your index finger to rotate it.
5) The thickness of the head of the screwdriver should match the groove shape of the screw's tail, so that the thickness of the head just fits into the groove on the nut, otherwise it is easy to damage the screw groove. Therefore, small screwdrivers cannot be used to tighten large screws.
6) For longer screwdrivers, you can press and rotate the handle with your right hand. Hold the middle of the screwdriver with your left hand to prevent the screwdriver from falling off. At the same time, your left hand cannot be placed around the screw to avoid damage to the handle or blade of the screwdriver. unit.

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