Manufacturing material and use method of screwdriver

Production material
The screwdriver has no round head, because the round head has no torque at all. One word is to ensure torque, and the cross can make the force more evenly distributed. According to the power source, there are manual screwdriver and electric screwdriver; There are flat head and phillips according to the screwdriver head or cutter head.
The head of a high-quality screwdriver is made of spring steel with high hardness. A good screwdriver should be hard but not brittle. When the opening of the screw head becomes bald and slippery, you can hit the screwdriver with a hammer to make the groove of the screw deeper, so that the screw can be unscrewed easily, and the screwdriver must be undamaged; Screwdrivers are often used to pry things, which requires a certain toughness without bending. In general, we hope that the hardness of the screwdriver head is greater than HRC60, and it is not easy to rust.
Use usage to edit advertisements
Align the end of the screwdriver with the special shape with the top pit of the screw, fix it, and then start to rotate the handle.
According to the specifications and standards, clockwise rotation is embedded; Rotate counterclockwise to loosen. (In rare cases, the opposite is true.)
bolt driver
bolt driver
Slotted screwdriver can be applied to cross screw. However, cross screw has strong deformation resistance.