Thread size of 6AN male coupler is 9/18-18 UNF, can use to splice or extend a line, works with female thread fitting.
Braided Steel Teflon Hose 4/8" 6AN to 6AN Straight - 90 Degrees 18"
(4-Pack) ORB-6 O-ring Boss -6 AN 6AN to AN6 6AN Male Adapter Fitting Black
2X 1/4 NPT to 6AN Adapter Straight Pipe Thread to 6 AN Flare Fitting Black
1/4 NPT to 6AN Adapter Straight Pipe Thread to 6 AN Flare Fitting Black
2Pcs Black 6AN to 1/4 NPT Adapter Straight Pipe Thread to 6 AN Flare Fitting
4Pcs Black 6AN to 1/4 NPT Adapter Straight Pipe Thread to 6 AN Flare Fitting
