Stainless Steel Hex Plug - 1/2" Male NPT

Works and does the job, but after 6 months of being installed with a temp probe in it starting to get a few rust spots on it.

Used these in my 9 Gal pot when I'm not brewing with it.They fit great on the outside but not as well on the inside if that was your plan. It can spin just twice on the inside of my pot.

This invaluable little investment will come in handy one day so it's better to have them when you need than be without.

Great threads and a cheap and easy way to seal up a port on the OBK pots that you're not using. Highly recommended.