Fittings - AdaptersOxygen Nut For Barb FittingSKU: W-7 Nut for use with oxygen barbs. Interested in pricing and more information about this product? Quantity Add to cart Add to quote Related products Fittings - AdaptersReusable 3/8″ x #6JIC Fitting – Gates 375B-6 View product Fittings - AdaptersReusable 3/8″ x O2 Fitting – Lenz 112R View product Fittings - AdaptersCGA-540 Oxygen Nut View product