Get durable nylon tube fittings at Grainger to help join tubing to commonly-used threaded ports. Nylon can offer high flexibility to help resist flexural fatigue, tube vibration and movement. Available configurations include male and female elbows, adapters and tees, bulkhead unions, crosses, couplings and other connectors. You'll also find nuts, nipples, plugs, hose caps and more here. Shop Grainger today for barbed, threaded, push-to-connect and other types of nylon tube fittings in a wide range of sizes.