6AN (0° & 90°) & 8AN (0°) - EFI Quick Connect. The thread size of 8an is 3/4-16UNF. [ Size ] The thread size of 6an is 9/16-18UNF. The thread size of 6an is 9/16-18UNF. [ Seal ] The 6an flare efi fitting is sealed at 37 degree angle to avoid leakage.
