you should be able to use a beer nut and tailpiece with that. the threading and size should be the same as that for connecting tubing to shanks.
you will also need a neoprene washer and the tailpiece that fits your tubing
i would recommend the 1/4'' tailpieces, as the 3/16'' tubing will fit very snugly on there, and even more securely with a clamp.
hope this helps.
Walk-In Serving(14): Flanders red, Hard Cider, Belgian Tripel, Liquid Stupid, Wee Heavy, American Brown, Rye IPA, American Amber, Imperial Stout, Dry Stout, Cream Ale, Belgian Wit, Traditional Mead, Oatmeal Stout
Walk-In Cold Storage(~50): lots of beers, meads, and ciders
Oak Barrel: Flanders Solera