This is a Genuine replacement part designed for use with some Dremel Saws. This screw is made out of Metal and it is Sold Individually. Its purpose is to hold the Blade. Requires a Hex key/Allen wrench to install/remove this part.
The flange fits between the flange plate and the safety guard. This part is available as an individual replacement. It is a genuine OEM sourced part which is specially designed for use with Dremel ultra-saws. A wrench set might be necessary during the installation of this part. It is made of metal and will need to be replaced if it breaks.