opnspaces wrote:
All the 1/2 inch pins I've seen have been threaded into the rack. If yours is the same then just tighten it down tight and move on.
This. ^
It’s probably not supposed to be a normal pin. There was either something threaded into the rack tube or a bolt with a shoulder that goes into the 5/8” hole and presses against the side of the rack tube with a nut on the opposite side. Bike racks wobble too much without something like that.
As was mentioned, a sleeve can work but use steel. Something only 1/4” tall by 5/8” diameter that a 1/2” bolt fits through will work.
Edit: Here’s one. Put this onto a bolt, then put it through with a nut on the other side and crank it down:
https://www.tractorsupply.com/tsc/product/phoenix-5-8-in-to-1-2-in-steel-sleeve-bushing. This forces the tube tight against one side.