Application Of Screws In Industry
The main purpose is to make industrial products form a fixed one. In use, it often occurs that the teeth cannot be closely attached, and the screw heads are broken if they are locked too hard, or the teeth are not locked tightly and fail to meet the conditions of use, all of which are accuracy problems. . Screws are "mass products", not hand-made works of art. In mass production, they are supplied to consumers in order to achieve high precision, stable quality and popular prices. The accuracy of the screw is usually 6g (grade 2, the American standard "IFI" is 2A teeth), and the rough screw used in construction projects is 8g (grade 3, "IFI" is 1A teeth).
