The captive panel screw is also called the captive screw, also called the anti-fall off screw, there are also customers called it in half thread screw.  Everyone's custom is different, but it actually means the same screw.  The front of the captive panel screw is a thread, and the middle is a thin screw, which is cleverly used to prevent falling off.  It is by adding a section of trail screw, rely on the trail screw to hang the screw on the connector (or through the sleeve, spring), so as not to screw off.  The screw structure itself does not have the function of preventing falling off, the function of preventing falling off of the screw is realized by the connection between the connecting piece and the connecting piece, that is, through the corresponding structure of the captive panel screw's small screw card in the connecting piece installation hole to prevent falling off.
Because many industries has requirements of captive panel screws, so it is very important to choose the screw manufacturers.  As a screw manufacturer with 20 years of experience, we can customize the captive panel screws according to different scenarios.  Whether it is production technology, or product quality, we will let you worry, rest assured.  If you need, welcome to inquire!