Where to choose the best screwdriver
Screwdriver introduction
A tool used to turn a screw to force it into place. It usually has a thin wedge-shaped head that can be inserted into the slot or notch of the screw head-also known as a “screwdriver”. There are mainly two types: one word (negative sign) and cross (positive sign). Hexagonal screwdrivers are also common, including inner and outer hexagons.
Screwdriver specifications
1. The model of the flat-blade screwdriver is expressed as the width of the blade * the shank. For example, 2×75mm means that the width of the cutter head is 2mm and the length of the rod is 75mm (not the full length).
2. The model of the Phillips screwdriver is expressed as the size of the bit*bar. For example, 2#×75mm, it means that the cutter head is No. 2 and the length of the metal rod is 75mm (not the full length). Some manufacturers use PH2 to represent 2#, which is actually the same.
The general Phillips screwdriver model is 0#, 1#, 2#, 3# and the corresponding slotted screwdriver specifications are roughly 3, 5, 6, 8
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Screwdriver type
1. Ordinary screwdriver
A screwdriver with a head and a handle. It is easy to prepare and can be used as long as it is taken out. However, because there are many different lengths and thicknesses of screws, it is sometimes necessary to prepare many different screwdrivers.
2. Combined screwdriver
A screwdriver that separates the screwdriver bit and the handle. When you want to install different types of screws, you only need to replace the screwdriver bit, and you don’t need to bring a large number of screwdrivers. The advantage is that it can save space, but it is easy to lose the screwdriver bit.
3. Electric screwdriver
Electric screwdriver, as the name implies, uses an electric motor instead of manual installation and removal of screws, usually a combination screwdriver.
4. Clock screwdriver
A precision screwdriver, which is often used to repair hand strap clocks, so it is called this.
5. King Kong screwdriver
The head handle and body length are smaller than the commonly used screwdrivers, not a clock screwdriver.
