Can you steer me in the right direction?

Forgive the title, I bought a parts catalog so I don’t have to keep asking these questions and here I am again...

So this looks like it should have something in it, as it’s a really big hole for just a little bar;

But it doesn’t show anything in the catalog


Is there some sort of bush needed?

Many thanks

no bush it is as it is by design it takes lateral thrust from the box and is oversize so you dont distort or pull on bottom of box when its tightened(lr tolerances)

Ahh ok thank you very much, another job can be completed today then!