Main category :
- Ordinary screwdriver (the handle and the screwdriver are connected together)
- Combined screwdriver (separate screw head and handle)
- electric screw driver
- Air screwdriver
- Watch -type screwdriver (belongs to the precision screwdriver, often used in repairing handband clocks)
Head shape
The screwdriver can be divided into one word, cross, rice character, star (computer), square head, hexagonal head, y -type head, etc. in different head types. Installing and repair must be used. It can be said that as long as there is a screw, screwdriver must be used.
There are not many hexagonal heads. The inner hexagon wrench is commonly used. There are many screws on some machines with inner hexagonal holes, which is convenient for multi -angle force. There are not many star types. Small star types are often used for disassembling mobile phones, hard disks, notebooks, etc. We call the small screwdriver call clock batch, commonly uses star T6, T8, cross PH0, PH00 and other.
Head said:
word slotted
Cross Phillips
Mi character pozi
Star Torx
Fangtou Square
Hexagonal hexagonal
Production Material
The screwdriver has no round head because there is no torque at all of the round head.
The word is to ensure torque, and the cross can make the power more evenly distributed.
There are manual screw knives and electric screw knives according to the power source;
the word is divided into a Flat Head and Phillips.
The head of the high -quality screwdriver is made of spring steel with higher hardness.
A good screwdriver should be hard but not crispy, hard and tough.
When the screw head is bald and slippery, you can use a hammer to tap the screwdriver to remove the groove of the screw, so that the screw knife must be unscrupulous;
the screw knife is often used to pry things, it requires a certain degree of toughness to not be weak.
Do not bend. Generally speaking, the hardness of the screwdriver's head is greater than HRC60, and it is not easy to rust.
The SALI brand's screwdriver uses PP and TPR large handles, two -color handle, massage handle screwdriver, and more comfortable use
The screw knife knife is made of CR-V, which is higher than the national standard
https://www.sali-group.com/pliers/screw-driver/
Video Introduction
