10AN to 3/8" Barb Bulkhead

Finally found a way to get my fuel lines through the firewall cleanly. The barb holds tight on a 3/8" hose, and the 10AN flare side seals perfectly with no leaks.

This bulkhead fits through a standard panel hole with no issues and the barb grips the hose tightly. Used it to pass my fuel return line through the firewall and it sealed perfectly on the first try.

The machining on the flare seat is clean and tight, so the 10AN line sealed up on the first try without any thread tape gymnastics. The barb side grips the 3/8" hose firmly too, even under pressure. Feels like a proper piece of hardware for a fuel system.