There are several common screwdrivers?

Lead: Screwdriver, Screwdriver, a tool used to twist a screw to force it into place, usually with a thin wedge-shaped head that can be inserted into the slot or notch of a screw head - the Jing-Jin-Ji dialect is known as the "tweeter" , Shaanxi, Anhui, Henan and Hubei and other places called the screwdriver. There are two main types (negative sign) and cross (positive sign). There are also common hex screwdrivers, including two kinds of hexagonal and hexagonal. So, what are the common screwdrivers?

1, ordinary screwdriver

Screws that are made with the handles are easy to prepare and can be used as long as they are available. However, because screws have many different lengths and thicknesses, it is sometimes necessary to prepare many different screwdrivers.

2, electric screwdriver

Electric screwdrivers, as the name suggests, use electric motors instead of human hands to install and remove screws, usually a combination screwdriver.

3, combination screwdriver

A screwdriver that separates the screwdriver bit from the handle, and when installing different types of screws, simply replace the screwdriver bit and you do not need to stock a large number of screwdrivers. The advantage is that space can be saved but it is easy to lose the screwdriver head.

4, watch screwdriver

Belong to precision screwdrivers, commonly used in the repair of hand strap type watches, so this is called.

Screwdrivers are generally head-type* working lengths.

Word head: 4*100 means that the width of the head of the screwdriver is 4 mm (the rod diameter is also 4 mm), and the effective working rod length is 100 mm.

Cross head: PH1*200 means that the head of the screwdriver is PH1 (taper and size). The effective working rod length is 200 mm.

Common specifications of the cross: PH000 PH00 PH0 PH1 PH2 PH3 where PH000 taper is the smallest PH3 taper.