I moved the photo to another file and that is why it is lost
Here it is again.



The 4-40 screw is a common screw found in most hardware or stores like Home Depot and Lowe's. It is nothing more than a round head 4-40 screw cut to 1/4". If it is zinc plated hit it with a Bernzomatic torch till it turns blue, wait for it to cool and wire brush it.
Just make sure you install it like it is shown in the photo that Brother Drew posted.

David