Screwdriver Making Material

The screwdriver has no round head because the round head has no torque at all. The word is to ensure that there is torque, and the cross allows the power to be distributed more evenly. According to the power source, there are manual screwdrivers and electric screwdrivers; flat heads and Phillips are divided according to the head or the cutter head.

The tip of a high quality screwdriver is made of spring steel with a relatively high hardness. A good screwdriver should be hard and not brittle, and hard and tough. When the screw head opening becomes bald and slippery, you can use a hammer to tap the screwdriver, and the slot of the screw is deeper, so that the screw can be unscrewed. The screwdriver is often used to pick up things, and it requires a certain degree of toughness. Bend is not folded. In general, it is desirable that the hardness of the head of the screwdriver is greater than HRC60 and it is not easy to rust.