A screwdriver is a tool used to turn a screw to force it into position, usually with a thin wedge-shaped head that can be inserted into the slot or recess of the screw head - referred to as a "screwdriver" in the Beijing Tianjin Hebei dialect, and a screwdriver in Shaanxi, Anhui, Henan, and Hubei. Below, the editor will introduce the types and specifications of screwdrivers, hoping to be helpful to readers.
A screwdriver, also known as a screwdriver, is a tool used to turn a screw to force it into position. It usually has a thin wedge-shaped head that can be inserted into the slot or groove of the screw head. It is called a "screwdriver" in the Beijing Tianjin Hebei dialect, and is called a screwdriver in Shaanxi, Anhui, Henan, and Hubei provinces. There are mainly two types: one character (minus sign) and the cross (plus sign). There are also common hexagonal screwdrivers, including two types: inner hexagonal and outer hexagonal.
What are the types of screwdrivers
1. Ordinary screwdriver
It is a screwdriver made with the head and handle together, which is easy to prepare and can be used as long as it is taken out. However, due to the many different lengths and thicknesses of screws, it is sometimes necessary to prepare many different screwdrivers.
2. Combination screwdriver
A screwdriver that separates the screwdriver head and handle. When installing different types of screws, simply replace the screwdriver head and do not need to carry a large number of screwdrivers. The advantage is that it can save space, but it is easy to lose the screwdriver head.
3. Electric screwdriver
Electric screwdriver, as the name suggests, is a combination screwdriver that replaces manual installation and removal of screws with an electric motor.
4. Clock driver
It belongs to the precision screwdriver and is commonly used for repairing hand strap watches, hence its name.
5. Small diamond screwdriver
The head handle and body length are smaller than commonly used screwdrivers, not clock drivers.
In terms of its structural shape, there are usually several types:
1. Straight. This is a common type. The head models include a letter, cross, beige, T-shaped (plum blossom), H-shaped (hexagonal), etc
2. L-shaped. It is commonly seen in hexagonal screwdrivers, which use their longer rods to increase torque and save effort.
3. T-shaped. There are many applications in the automotive repair industry.
Screwdriver specifications
1. The model of a flat head screwdriver is represented by the width of the blade * the shank. For example, 2 × 75mm represents a blade width of 2mm and a rod length of 75mm (non full length).
2. The model of a cross screwdriver is represented by the size of the blade * the shank. For example, 2# × 75mm indicates that the cutting head is No.2 and the metal rod length is 75mm (not the full length). Some manufacturers use PH2 to represent 2 #, but in reality, it is the same. You can roughly estimate the size of the blade based on the thickness of the blade, but in industry, it is distinguished by the size of the blade. The thickness of the metal rods corresponding to models 0 #, 1 #, 2 #, and 3 # is approximately 3.0mm, 5.0mm, 6.0mm, and 8.0mm.
What are the specifications of commonly used screwdriver models
Star hexagonal: T3, T4, T5, T6, T7, T8, T9, T10 (mobile phones that can remove almost all hexagonal screws)
M-shaped (U-shaped, forked): M2.6 (universal U-shaped screwdriver specification)
Y-shaped (triangular): Y2.0, Y3.0 (Y-shaped screw phones, smartphones, seat chargers, etc., all in one)
▲ Type: 2.0, 2.3 (remove some triangular screws, rarely used, but backup is still necessary)
★ Type: 1, 2 (special hexagonal screw phones can also be disassembled)
Cross: 1.0, 1.5, 2.0, 3.0 (used for PSP, MP4, MP3, digital, etc.)
Word: 1.0, 1.5, 2.0, 3.0 (clock series)
Inner hexagonal: H1.5, H2.0, H2.5, H3.0, H4, etc
A screwdriver does not have a round head because the round head is not twisted at all. One word is to ensure there is twisting resistance, and the cross can distribute the force more evenly. According to the power source, there are manual screwdrivers and electric screwdrivers; There are a character and a cross according to the batch head or knife head.
In the industry, it is based on the batch header. It comes in two different sizes. One is the metric system, which is commonly referred to as the unit of measurement in millimeters. For example, the sizes mentioned upstairs. There are also English sizes, which are measured in inches, such as 1/4, 3/16. Multiplying this number by 25 is the metric size.
The blade of a high-quality screwdriver is made of spring steel with relatively high hardness. A good screwdriver should be hard and not brittle, with a stitch in the middle. When the opening of the screw head becomes bald and slippery, you can use a hammer to tap the screwdriver to make the groove of the screw deeper, making it easier to unscrew the screw. The screwdriver should be undamaged; Screwdrivers are often used to pry things, requiring a certain degree of toughness without bending or bending. Overall, we hope that the hardness of the screwdriver head is greater than HRC60 and less prone to rusting.