Introduction To Screws

Screws are also a type of fastener consisting of two parts, the head and the screw. According to the purpose, the screws can be divided into three types of machine screws, set screws and special purpose screws. The machine screw is mainly used for the fastening connection between a part of a fixed threaded hole and a part with a through hole. It is not required to have a nut. This type of connection is called a screw connection. It is also a detachable connection and can also be used with a nut. A tight connection between two parts with through holes. The set screw is mainly used to fix the relative position between the two parts. Special purpose screws such as eyebolts are used for lifting parts.