Male 1/4-28 Thread To Barbed Adapters To 1/16", 3/32", 1/8", 5/32", 3/16" Id Flexible Tubing For Low Pressure Fluid Systems - Pipe Fittings - AliExpress
QTH Series - Hose Barb x Stem - Straight Connector - Push-In Gray Acetal Fittings - Push-In Fittings
2601 Series - BSPP Male Stem Adapter Barbed - Metal Hose Barb Straight Connector - Metal Hose Barb Fittings - Metal Fittings
QTH Series - Metric - Hose Barb x Stem - Push-In Black Acetal Metric Fittings - Push-In Fittings
John Guest Push-to-connect stem-to-hose adapters, 3/8"×1/2", 10/pack | VWR