Fittings - AdaptersCGA-346 Air NutSKU: w-14-2 CGA-346 Air Nut Interested in pricing and more information on this product? Add to quote Related products Fittings - AdaptersCGA-540 Oxygen Nut View product Fittings - AdaptersReusable 3/8″ x O2 Fitting – Lenz 112R View product Fittings - Adapters1/2″ Male NPT x 5/8″ Barb Adapter View product