Modeling the bolt was the most complicated object to create. I used a helix as a starting point, I extruded the edges and patched the holes. I then used the bevel tool to create the threads.
The nameplate was made by creating a font shape and merging it with a rectangle via boolean modifier.
The box was made by extruding a rectangle and using booleans to create the hole for the screw
After this I created a cylinder for the head of the screw and used boolean operations to combine the shapes.