Thread size of 6an: 9/16-18UNF. The barb fitting only work with rubber fuel line.
-6AN 90 Degree Push Lock Reusable Black Barbed Aluminum Hose End 6AN AN6 -6
6AN 90 Degree Push Lock Hose Fitting For 3/8'' ID Rubber Hose Line 2Pcs
SYKRSS 6AN 90 Degree Push Lock Swivel Hose End Fitting for Rubber Fuel Line B...
BLACK AN6 6AN AN-6 90 Degree Push On/ Push Lock Hose End Fitting Adapter
4pcs 4AN 6AN 8AN 10AN 12AN 90 Degree Push Lock Fuel Hose End Fitting Adaptor
2Pcs Universal 90 Degree Push Lock Fuel Hose End Fitting/Adaptor AN6 -6AN Black
