Help with these parts

Can someone help identify these components?. I am new to Triton gear. I have recently bought the TRA001 router, RTA300 router table and RSA300 router stand. After making some test cuts with the table mounted router, I noticed some components on the floor under the table. I checked out the router, table and stand and can't see anything that's fallen off. I can't see the components in the assembly diagrams either. I have taken some pics. There is a black plastic knob with a brass threaded shaft,...

Source: http://www.woodworkforums.com/f15/help-these-parts-152604/

cleveland browns jack o lantern templates cain velasquez vs brock lesnar full fight