Bought these metal female threaded M10 stainless bolts on Amazon Link to purchase here
At Hometown Ace Bought M10 Stainless Bolt and Lock Washer.
Started pilot hole by lining up the bolt on the vent and marking the middle with a much smaller drill bit. Once the smaller bit was through went through with a 3/8ths which was a perfect fit. then just put everything through as shown and tightened.
This mod can be done on any bare Weber vent.
Between this 2008 Weber One Touch Gold and the Smokey Joe Silver I cooked at least 6 times a week all spring/summer/fall of 2015. They were both long overdue for a thorough cleaning and restoration. The good thing about Weber kettles is that their finish is so durable, even the worst crud build up and nastiest looking grills can be restored with a little elbow grease and a few inexpensive supplies.
Following the guides from The Weber Kettle Club I picked up a cheap razor scraper that came with 10 extra razor blades and some extra fine #0000 steel wool. A small flathead screwdriver helped get bits of gunk out of some tiny tough spots.