How to use the set screw?

The set screw is called a headless screw, which is a kind of screw used to fix the relative position of the parts. It is mainly used to fix the relative position between two parts. As we say, it is called "stop screw", which is equivalent to the role of positioning pin.

When the set screw is used, the set screw is screwed into the screw hole of the part to be fixed, and the end of the screw is pressed against the surface of another part, even if the former part is fixed on the latter part. Slotted and hexagon socket set screws are used on machine parts where the nail head is not allowed to be exposed, and square head set screws are suitable for machine parts where the nail head is allowed to be exposed.

The compression force of the set screw is small for the slotted screw, large for the square head screw, and centered for the hexagon socket head screw. Conical end screws are suitable for parts with low strength; non-pointed conical end screws are suitable for parts with pits on the pressing surface to increase the ability to transmit loads; flat end screws (the pressing surface should be flat) and concave end screws are suitable for parts with high hardness or frequently adjusted positions; long cylindrical end screws are suitable for tubular shafts (on thin-walled parts, the cylindrical end enters the hole of the tubular shaft to transmit larger load, but there should be a device to prevent the screw from loosening when in use.