I bought a heavy duty u-bolt and use the hook inside the kettle lid. I think it works perfectly.

Nice looking table by the way!

U-bolt https://imgur.com/a/FbXpdwI

Amazon: https://www.amazon.com/dp/B000CSZG8Q/ref=cm_sw_r_u_apa_fabc_vNBSFbZ1FY90D?_encoding=UTF8&psc=1