Custom nickel plated with thread locking patch machine screw

Industry knowledge：

Industrial Applications Of Screws

The main purpose is to make industrial products form a fixed one. In use, it often occurs that the thread cannot be closely attached to the thread, that the screw head is broken if the screw is tightened too hard, or the thread is not tightly locked and fails 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 US standard “IFI” is 2A thread), and the rough screw used in construction is 8g (grade 3, “IFI” is 1A thread).