Threaded bracket for advertising signs

A screw is a tool that uses the physics and mathematics of the oblique circular rotation and friction of the object to gradually tighten the objects and parts. Screws are commonly called “screws”. The shape of the nut is usually hexagonal, and the inner hole is internal thread, which is used to cooperate with the bolt and tighten the related parts. The nut is commonly called, and the standard should be called “nut”. The head of the bolt is generally hexagonal, and the shank has an external thread. The screw is small, the head has a flat head, a cross head, etc., and the rod has an external thread. The actual stud should be called “double-ended stud”, both ends have external threads, and the middle is generally a polished rod. The long end of the thread is used to connect to the deep hole, and the short end is connected to the nut. Screws have important tasks in industry. As long as there is industry on the earth, the function of screws will always be important. The screw is a common invention in people’s production and life for thousands of years. According to the field of application, it is the first invention of mankind.

The main function of the screw is to connect the two workpieces together and act as a fastening. The main purpose is to make the industrial products form a fixed body. In use, it often happens that the teeth cannot be closely attached to each other, and the screw head is broken if it is tightened too hard. , Or the tooth pattern is bad and the lock is not tight and it fails to meet the conditions of use, it is a precision problem. Screws are “quantity products”, not hand-made artworks. In mass production, they are supplied to consumers for the purpose of achieving high-precision, stable quality and popular prices.